diff --git a/.rubocop.yml b/.rubocop.yml
index 364b0382f..fa5d4d57e 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -5,7 +5,7 @@ Metrics/MethodLength:
 Metrics/CyclomaticComplexity:
   Max: 13
 Metrics/PerceivedComplexity:
-  Max: 9
+  Max: 11
 Metrics/AbcSize:
   Max: 45
 Metrics/ClassLength:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a3e3b895..d53066057 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog Fab-manager
 
+## v4.3.1 2020 March 04
+
+- Updated user's manual for v4.3 (fr)
+- Display user's manual when help is asked, if no tour is available
+- Change style and pluralize the text of the slot division alert in new availability assistant
+- Fix a bug: in feature tours, next and previous arrows may be broken on some systems
+- Fix a bug: in the user's menu, two links to the personal wallet
+- Fix a bug: spaces item is not at the correct position in the admin navigation menu
+
 ## v4.3.0 2020 March 04
 
 - Ability to configure reservation slot restricted for plan subscribers
@@ -19,6 +28,7 @@
 - Administrators can to book machine/space/training slots, until 1 month in the past
 - Filter members by non-validated emails or by inactive for 3 years
 - Ability to customize the title of the link to the about page
+- Feature tours for administrators that provides contextual help
 - Automatic version check with security alerts
 - Public endpoint to check the system health
 - Configuration of phone number in members registration forms: can be required or optional, depending on `PHONE_REQUIRED` configuration
diff --git a/app/assets/javascripts/controllers/application.js.erb b/app/assets/javascripts/controllers/application.js.erb
index b5d2019b7..b409038b1 100644
--- a/app/assets/javascripts/controllers/application.js.erb
+++ b/app/assets/javascripts/controllers/application.js.erb
@@ -344,6 +344,24 @@ Application.Controllers.controller('ApplicationController', ['$rootScope', '$sco
       $scope.isAuthenticated = Auth.isAuthenticated;
       $scope.isAuthorized = AuthService.isAuthorized;
       $rootScope.login = $scope.login;
+
+      // handle F1 key to trigger help
+      window.addEventListener('keydown', function(e) {
+        if (e.key === 'F1') {
+          if ($rootScope.currentUser.role !== 'admin') return;
+
+          e.preventDefault();
+          // we wait a little bit and then, check if a tour has started (by checking for a tour popover).
+          // if not, we consider that we are on a page that does not provides a tour so we fallback to the default behavior
+          // -> opening the user's manual
+          setTimeout(function() {
+            const tourPopover = document.querySelector('.ui-tour-popup');
+            if (!tourPopover || (tourPopover.offsetTop === 0 && tourPopover.offsetTop === 0)) {
+              window.open('https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf', '_blank');
+            }
+          }, 300);
+        }
+      });
     };
 
     /**
diff --git a/app/assets/javascripts/controllers/main_nav.js b/app/assets/javascripts/controllers/main_nav.js
index 8335a3634..fe9adada4 100644
--- a/app/assets/javascripts/controllers/main_nav.js
+++ b/app/assets/javascripts/controllers/main_nav.js
@@ -140,7 +140,7 @@ Application.Controllers.controller('MainNavController', ['$scope', function ($sc
   $scope.adminNavLinks = adminNavLinks;
 
   if (!Fablab.withoutSpaces) {
-    return $scope.adminNavLinks.splice(4, 0, {
+    return $scope.adminNavLinks.splice(3, 0, {
       state: 'app.public.spaces_list',
       linkText: 'app.public.common.manage_the_spaces',
       linkIcon: 'rocket'
diff --git a/app/assets/templates/admin/calendar/eventModal.html.erb b/app/assets/templates/admin/calendar/eventModal.html.erb
index 10c3cdfc5..d5fd10571 100644
--- a/app/assets/templates/admin/calendar/eventModal.html.erb
+++ b/app/assets/templates/admin/calendar/eventModal.html.erb
@@ -202,7 +202,10 @@
       <ul>
         <li ng-repeat="slot in occurrences">{{slot.start_at | amDateFormat:'L LT'}} - {{slot.end_at | amDateFormat:'LT'}}</li>
       </ul>
-      <div class="alert alert-warning" translate translate-values="{DURATION: slotDuration}"> {{ 'app.admin.calendar.divided_in_slots' }} </div>
+      <div class="alert alert-info text-xs">
+        <i class="fa fa-lightbulb-o m-r" aria-hidden="true"></i>
+        <span translate translate-values="{DURATION: slotDuration, COUNT: occurrences.length}"> {{ 'app.admin.calendar.divided_in_slots' }}</span>
+      </div>
       <div>
         <span class="underline" translate>{{ 'app.admin.calendar.reservable' }}</span>
         <span ng-bind-html="reservableName"></span>
diff --git a/app/assets/templates/shared/header.html.erb b/app/assets/templates/shared/header.html.erb
index ebeb12c1d..9c9f27c36 100644
--- a/app/assets/templates/shared/header.html.erb
+++ b/app/assets/templates/shared/header.html.erb
@@ -40,7 +40,6 @@
         <li><a ui-sref="app.logged.dashboard.events" translate>{{ 'app.public.common.my_events' }}</a></li>
         <li><a ui-sref="app.logged.dashboard.invoices" ng-hide="fablabWithoutInvoices" translate>{{ 'app.public.common.my_invoices' }}</a></li>
         <li ng-hide="fablabWithoutWallet"><a ui-sref="app.logged.dashboard.wallet" translate>{{ 'app.public.common.my_wallet' }}</a></li>
-        <li><a ui-sref="app.logged.dashboard.wallet" translate>{{ 'app.public.common.my_wallet' }}</a></li>
         <li class="divider" ng-if="currentUser.role === 'admin'"></li>
         <li><a class="text-black pointer" ng-click="help($event)" ng-if="currentUser.role === 'admin'"><i class="fa fa-question-circle"></i> <span translate>{{ 'app.public.common.help' }}</span> </a></li>
         <li class="divider"></li>
diff --git a/app/assets/templates/shared/tour-step-template.html b/app/assets/templates/shared/tour-step-template.html
index fa9c83b0e..ed3643894 100644
--- a/app/assets/templates/shared/tour-step-template.html
+++ b/app/assets/templates/shared/tour-step-template.html
@@ -2,10 +2,16 @@
   <div class="popover-content tour-step-content" bind-html-compile="tourStep.trustedContent || tourStep.content"></div>
   <div class="popover-navigation tour-step-navigation">
     <div class="btn-group">
-      <button type="button" class="btn btn-sm btn-default" ng-if="tourStep.isPrev()" ng-click="tour.prev()" translate>⮜ {{ 'app.shared.tour.previous' }}</button>
+      <button type="button" class="btn btn-sm btn-default" ng-if="tourStep.isPrev()" ng-click="tour.prev()">
+        <i class="fa fa-caret-left" aria-hidden="true"></i>
+        <span translate>{{ 'app.shared.tour.previous' }}</span>
+      </button>
       <div class="button-placekeeper" ng-if="!tourStep.isPrev()"></div>
       <button type="button" class="btn btn-sm btn-default" ng-click="tour.end()" translate>{{ 'app.shared.tour.end' }}</button>
-      <button type="button" class="btn btn-sm btn-default" ng-if="tourStep.isNext()" ng-click="tour.next()" translate>{{ 'app.shared.tour.next' }} ⮞</button>
+      <button type="button" class="btn btn-sm btn-default" ng-if="tourStep.isNext()" ng-click="tour.next()">
+        <span translate>{{ 'app.shared.tour.next' }}</span>
+        <i class="fa fa-caret-right" aria-hidden="true"></i>
+      </button>
       <div class="button-placekeeper" ng-if="!tourStep.isNext()"></div>
     </div>
   </div>
diff --git a/config/locales/app.admin.en.yml b/config/locales/app.admin.en.yml
index 583578925..c95ae604c 100644
--- a/config/locales/app.admin.en.yml
+++ b/config/locales/app.admin.en.yml
@@ -67,7 +67,7 @@ en:
         select_nb_period: "Please select a number of periods for the recurrence"
         select_end_date: "Please select the date of the last occurrence"
         about_to_create: "You are about to create the following {TYPE, select, machines{machine} training{training} space{space} other{other}} {NUMBER, plural, one{slot} other{slots}}:"
-        divided_in_slots: "This slot will be open for booking in {DURATION}-minutes increments. Contact your system administrator to change this setting."
+        divided_in_slots: "{COUNT, plural, =1{This slot} other{These slots}} will be open for booking in {DURATION}-minutes increments. Contact your system administrator to change this setting."
         reservable: "Reservable(s):"
         labels: "Label(s):"
         none: "None"
@@ -1075,7 +1075,7 @@ en:
       tour:
         conclusion:
           title: "Thank you for your attention"
-          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
+          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
         trainings:
           welcome:
             title: "Trainings"
diff --git a/config/locales/app.admin.es.yml b/config/locales/app.admin.es.yml
index deb5ebe79..eece2f1fb 100644
--- a/config/locales/app.admin.es.yml
+++ b/config/locales/app.admin.es.yml
@@ -67,7 +67,7 @@ es:
         select_nb_period: "Please select a number of periods for the recurrence"
         select_end_date: "Please select the date of the last occurrence"
         about_to_create: "Está a punto de crear los horarios siguientes: {TYPE, select, machines{machine} training{training} space{space} other{other}} {NUMBER, plural, one{slot} other{slots}}:"
-        divided_in_slots: "This slot will be open for booking in {DURATION}-minutes increments. Contact your system administrator to change this setting."
+        divided_in_slots: "{COUNT, plural, =1{This slot} other{These slots}} will be open for booking in {DURATION}-minutes increments. Contact your system administrator to change this setting."
         reservable: "Reservable(s):"
         labels: "Etiqueta(s):"
         none: "Ninguna"
@@ -1075,7 +1075,7 @@ es:
       tour:
         conclusion:
           title: "Thank you for your attention"
-          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
+          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
         trainings:
           welcome:
             title: "Trainings"
diff --git a/config/locales/app.admin.fr.yml b/config/locales/app.admin.fr.yml
index 4d14025f9..7de812b7e 100644
--- a/config/locales/app.admin.fr.yml
+++ b/config/locales/app.admin.fr.yml
@@ -67,7 +67,7 @@ fr:
         select_nb_period: "Veuillez choisir un nombre de périodes pour la récurrence"
         select_end_date: "Veuillez choisir la date de dernière occurrence"
         about_to_create: "Vous vous apprêtez à créer {NUMBER, plural, one{le créneau} other{les créneaux}} {TYPE, select, machines{machine} training{formation} space{espace} other{autre}} suivant :"
-        divided_in_slots: "Ce créneau sera proposé à la réservation par tranches de {DURATION} minutes. Contactez votre administrateur système pour modifier ce paramètre."
+        divided_in_slots: "{COUNT, plural, =1{Ce créneau sera proposé} other{Ces créneaux seront proposés}} à la réservation par tranches de {DURATION} minutes. Contactez votre administrateur système pour modifier ce paramètre."
         reservable: "Réservable(s) :"
         labels: "Étiquette(s) :"
         none: "Aucune"
@@ -1074,7 +1074,7 @@ fr:
       tour:
         conclusion:
           title: "Merci de votre attention"
-          content: "<p>Si vous souhaitez relancer cette aide contextuelle, appuyez sur <strong>F1</strong> à n'importe quel moment ou cliquez sur [? Aide] depuis le menu utilisateur.</p><p>Si vous avez besoin d'aide supplémentaire, vous pouvez <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>consulter le guide d'utilisation</a> disponible en Français.</p><p>L'équipe de Fab-manager propose également du support personnalisé (aide à la prise en main, aide à l'installation, personnalisation, etc.), <a href='mailto:contact@fab-manager.com'>contactez-nous</a> pour plus d'informations.</p>"
+          content: "<p>Si vous souhaitez relancer cette aide contextuelle, appuyez sur <strong>F1</strong> à n'importe quel moment ou cliquez sur [? Aide] depuis le menu utilisateur.</p><p>Si vous avez besoin d'aide supplémentaire, vous pouvez <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>consulter le guide d'utilisation</a> disponible en Français.</p><p>L'équipe de Fab-manager propose également du support personnalisé (aide à la prise en main, aide à l'installation, personnalisation, etc.), <a href='mailto:contact@fab-manager.com'>contactez-nous</a> pour plus d'informations.</p>"
         trainings:
           welcome:
             title: "Formations"
diff --git a/config/locales/app.admin.pt.yml b/config/locales/app.admin.pt.yml
index b7a56c229..7aa637e4a 100755
--- a/config/locales/app.admin.pt.yml
+++ b/config/locales/app.admin.pt.yml
@@ -67,7 +67,7 @@ pt:
         select_nb_period: "Please select a number of periods for the recurrence"
         select_end_date: "Please select the date of the last occurrence"
         about_to_create: "You are about to create the following {TYPE, select, machines{machine} training{training} space{space} other{other}} {NUMBER, plural, one{slot} other{slots}}:"
-        divided_in_slots: "This slot will be open for booking in {DURATION}-minutes increments. Contact your system administrator to change this setting."
+        divided_in_slots: "{COUNT, plural, =1{This slot} other{These slots}} will be open for booking in {DURATION}-minutes increments. Contact your system administrator to change this setting."
         reservable: "Reservable(s) :"
         labels: "Etiqueta(s):"
         none: "Nenhuma"
@@ -1075,7 +1075,7 @@ pt:
       tour:
         conclusion:
           title: "Thank you for your attention"
-          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
+          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
         trainings:
           welcome:
             title: "Trainings"
diff --git a/config/locales/app.public.en.yml b/config/locales/app.public.en.yml
index a88539dc9..0c4881928 100644
--- a/config/locales/app.public.en.yml
+++ b/config/locales/app.public.en.yml
@@ -387,7 +387,7 @@ en:
       tour:
         conclusion:
           title: "Thank you for your attention"
-          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
+          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
         welcome:
           welcome:
             title: "Welcome to Fab-manager"
diff --git a/config/locales/app.public.es.yml b/config/locales/app.public.es.yml
index bac19cf25..3974f7260 100644
--- a/config/locales/app.public.es.yml
+++ b/config/locales/app.public.es.yml
@@ -387,7 +387,7 @@ es:
       tour:
         conclusion:
           title: "Thank you for your attention"
-          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
+          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
         welcome:
           welcome:
             title: "Welcome to Fab-manager"
diff --git a/config/locales/app.public.fr.yml b/config/locales/app.public.fr.yml
index 04b3499ad..1e31566b4 100644
--- a/config/locales/app.public.fr.yml
+++ b/config/locales/app.public.fr.yml
@@ -387,7 +387,7 @@ fr:
       tour:
         conclusion:
           title: "Merci de votre attention"
-          content: "<p>Si vous souhaitez relancer cette aide contextuelle, appuyez sur <strong>F1</strong> à n'importe quel moment ou cliquez sur [? Aide] depuis le menu utilisateur.</p><p>Si vous avez besoin d'aide supplémentaire, vous pouvez <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>consulter le guide d'utilisation</a> disponible en Français.</p><p>L'équipe de Fab-manager propose également du support personnalisé (aide à la prise en main, aide à l'installation, personnalisation, etc.), <a href='mailto:contact@fab-manager.com'>contactez-nous</a> pour plus d'informations.</p>"
+          content: "<p>Si vous souhaitez relancer cette aide contextuelle, appuyez sur <strong>F1</strong> à n'importe quel moment ou cliquez sur [? Aide] depuis le menu utilisateur.</p><p>Si vous avez besoin d'aide supplémentaire, vous pouvez <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>consulter le guide d'utilisation</a> disponible en Français.</p><p>L'équipe de Fab-manager propose également du support personnalisé (aide à la prise en main, aide à l'installation, personnalisation, etc.), <a href='mailto:contact@fab-manager.com'>contactez-nous</a> pour plus d'informations.</p>"
         welcome:
           welcome:
             title: "Bienvenue dans Fab-manager"
diff --git a/config/locales/app.public.pt.yml b/config/locales/app.public.pt.yml
index b2c93ee12..23efeed25 100755
--- a/config/locales/app.public.pt.yml
+++ b/config/locales/app.public.pt.yml
@@ -387,7 +387,7 @@ pt:
       tour:
         conclusion:
           title: "Thank you for your attention"
-          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.2.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
+          content: "<p>If you want to restart this contextual help, press <strong>F1</strong> at any time or click on [? Help] from the user's menu.</p><p>If you need additional help, you can <a href='https://github.com/sleede/fab-manager/raw/master/doc/fr/guide_utilisation_fab_manager_v4.3.pdf' target='_blank'>check the user guide</a> (only in French for now).</p><p>The Fab-manager's team also provides personalized support (help with getting started, help with installation, customization, etc.), <a href='mailto:contact@fab-manager.com'>contact-us</a> for more info.</p>"
         welcome:
           welcome:
             title: "Welcome to Fab-manager"
diff --git a/doc/fr/guide_utilisation_fab_manager_v4.2.pdf b/doc/fr/guide_utilisation_fab_manager_v4.3.pdf
similarity index 81%
rename from doc/fr/guide_utilisation_fab_manager_v4.2.pdf
rename to doc/fr/guide_utilisation_fab_manager_v4.3.pdf
index 3f6435c40..315759929 100644
Binary files a/doc/fr/guide_utilisation_fab_manager_v4.2.pdf and b/doc/fr/guide_utilisation_fab_manager_v4.3.pdf differ
diff --git a/package.json b/package.json
index 90af721eb..d1b258ad1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fab-manager",
-  "version": "4.3.0",
+  "version": "4.3.1",
   "description": "Fab-manager is the FabLab management solution. It provides a comprehensive, web-based, open-source tool to simplify your administrative tasks and your marker's projects.",
   "keywords": [
     "fablab",