diff --git a/.idea/codeStyles/codeStyleConfig.xml b/.idea/codeStyles/codeStyleConfig.xml
new file mode 100644
index 0000000..a55e7a1
--- /dev/null
+++ b/.idea/codeStyles/codeStyleConfig.xml
@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>
\ No newline at end of file
diff --git a/README.md b/README.md
index 5cffd8c..3fee068 100644
--- a/README.md
+++ b/README.md
@@ -93,4 +93,6 @@ Pas de commandes.
 ### Question 14
 ```bash
 symfony console doctrine:fixtures:load
-```
\ No newline at end of file
+```
+
+### Question 15
\ No newline at end of file
diff --git a/config/packages/security.yaml b/config/packages/security.yaml
index 8196f0a..d6ee356 100644
--- a/config/packages/security.yaml
+++ b/config/packages/security.yaml
@@ -10,6 +10,7 @@ security:
                 class: App\Entity\User
                 property: email
     role_hierarchy:
+        ROLE_ADMINISTRATEUR: [ROLE_INSTRUCTOR, ROLE_APPRENTI, ROLE_USER]
         ROLE_INSTRUCTOR: ROLE_USER
         ROLE_APPRENTI: ROLE_USER
     firewalls:
diff --git a/src/Controller/SecurityController.php b/src/Controller/SecurityController.php
index 73da5ac..3269b24 100644
--- a/src/Controller/SecurityController.php
+++ b/src/Controller/SecurityController.php
@@ -13,7 +13,7 @@ class SecurityController extends AbstractController
     public function login(AuthenticationUtils $authenticationUtils): Response
     {
         if ($this->getUser()) {
-            return $this->redirectToRoute('app_atelier_index');
+            return $this->redirectToRoute('app_index');
         }
 
         // get the login error if there is one
diff --git a/src/Controller/UserController.php b/src/Controller/UserController.php
new file mode 100644
index 0000000..94b2cc8
--- /dev/null
+++ b/src/Controller/UserController.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace App\Controller;
+
+use App\Entity\User;
+use App\Form\UserType;
+use App\Repository\UserRepository;
+use Sensio\Bundle\FrameworkExtraBundle\Configuration\IsGranted;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+#[IsGranted('ROLE_ADMINISTRATEUR')]
+#[Route('/user')]
+class UserController extends AbstractController
+{
+    #[Route('/', name: 'app_user_index', methods: ['GET'])]
+    public function index(UserRepository $userRepository): Response
+    {
+        return $this->render('user/index.html.twig', [
+            'users' => $userRepository->findAll(),
+        ]);
+    }
+
+    #[Route('/new', name: 'app_user_new', methods: ['GET', 'POST'])]
+    public function new(Request $request, UserRepository $userRepository): Response
+    {
+        $user = new User();
+        $form = $this->createForm(UserType::class, $user);
+        $form->handleRequest($request);
+
+        if ($form->isSubmitted() && $form->isValid()) {
+            $userRepository->save($user, true);
+
+            return $this->redirectToRoute('app_user_index', [], Response::HTTP_SEE_OTHER);
+        }
+
+        return $this->renderForm('user/new.html.twig', [
+            'user' => $user,
+            'form' => $form,
+        ]);
+    }
+
+    #[Route('/{id}', name: 'app_user_show', methods: ['GET'])]
+    public function show(User $user): Response
+    {
+        return $this->render('user/show.html.twig', [
+            'user' => $user,
+        ]);
+    }
+
+    #[Route('/{id}/edit', name: 'app_user_edit', methods: ['GET', 'POST'])]
+    public function edit(Request $request, User $user, UserRepository $userRepository): Response
+    {
+        $form = $this->createForm(UserType::class, $user);
+        $form->handleRequest($request);
+
+        if ($form->isSubmitted() && $form->isValid()) {
+            $userRepository->save($user, true);
+
+            return $this->redirectToRoute('app_user_index', [], Response::HTTP_SEE_OTHER);
+        }
+
+        return $this->renderForm('user/edit.html.twig', [
+            'user' => $user,
+            'form' => $form,
+        ]);
+    }
+
+    #[Route('/{id}', name: 'app_user_delete', methods: ['POST'])]
+    public function delete(Request $request, User $user, UserRepository $userRepository): Response
+    {
+        if ($this->isCsrfTokenValid('delete' . $user->getId(), $request->request->get('_token'))) {
+            $userRepository->remove($user, true);
+        }
+
+        return $this->redirectToRoute('app_user_index', [], Response::HTTP_SEE_OTHER);
+    }
+}
diff --git a/src/Entity/User.php b/src/Entity/User.php
index e56617c..9db0d01 100644
--- a/src/Entity/User.php
+++ b/src/Entity/User.php
@@ -83,9 +83,9 @@ class User implements UserInterface, PasswordAuthenticatedUserInterface
     {
         $roles = $this->roles;
         // guarantee every user at least has ROLE_USER
-        $roles[] = 'ROLE_USER';
-        $roles[] = 'ROLE_INSTRUCTOR';
-        $roles[] = 'ROLE_APPRENTI';
+        if (sizeof($roles) == 0) {
+            $roles[] = "ROLE_APPRENTI";
+        }
 
         return array_unique($roles);
     }
diff --git a/src/Form/UserType.php b/src/Form/UserType.php
new file mode 100644
index 0000000..49ed12b
--- /dev/null
+++ b/src/Form/UserType.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Form;
+
+use App\Entity\User;
+use PhpParser\Node\Expr\Array_;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\CallbackTransformer;
+use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class UserType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder
+            ->add('email')
+            ->add('roles', ChoiceType::class, [
+               'choices' => [
+                   'Apprenti' => 'ROLE_APPRENTI',
+                   'Instructeur' => 'ROLE_INSTRUCTOR',
+                   'Admin' => 'ROLE_ADMINISTRATEUR'
+               ],
+                'required' => true,
+                'multiple' => false,
+                'expanded' => false,
+            ])
+            ->add('nom')
+            ->add('prenom');
+
+        $builder->get('roles')
+            ->addModelTransformer(new CallbackTransformer(
+                function ($rolesArray) {
+                    // transform the array to a string
+                    return count($rolesArray)? $rolesArray[0]: null;
+                },
+                function ($rolesString) {
+                    // transform the string back to an array
+                    return [$rolesString];
+                }
+            ));
+
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'data_class' => User::class,
+        ]);
+    }
+}
diff --git a/src/Security/AppAuthentificatorAuthenticator.php b/src/Security/AppAuthentificatorAuthenticator.php
index 946b252..7ca73ed 100644
--- a/src/Security/AppAuthentificatorAuthenticator.php
+++ b/src/Security/AppAuthentificatorAuthenticator.php
@@ -46,7 +46,7 @@ class AppAuthentificatorAuthenticator extends AbstractLoginFormAuthenticator
             return new RedirectResponse($targetPath);
         }
 
-        return new RedirectResponse($this->urlGenerator->generate('app_atelier_index'));
+        return new RedirectResponse($this->urlGenerator->generate('app_index'));
     }
 
     protected function getLoginUrl(Request $request): string
diff --git a/templates/components/navbar.html.twig b/templates/components/navbar.html.twig
index a590160..b0d18df 100644
--- a/templates/components/navbar.html.twig
+++ b/templates/components/navbar.html.twig
@@ -13,16 +13,22 @@
                 <li class="nav-item">
                     <a class="nav-link" href="{{ path('app_atelier_index') }}">Atelier</a>
                 </li>
-                {% if app.user %}
+
+                {% if app.user and is_granted('ROLE_INSTRUCTOR') %}
                     <li class="nav-item">
                         <a class="nav-link" href="{{ path('app_atelier_by_me') }}">Mes Ateliers</a>
                     </li>
                 {% endif %}
-                {% if app.user %}
+                {% if app.user and is_granted('ROLE_APPRENTI') %}
                     <li class="nav-item">
                         <a class="nav-link" href="{{ path('app_atelier_inscrit') }}">Mes Formations</a>
                     </li>
                 {% endif %}
+                {% if app.user and is_granted('ROLE_ADMINISTRATEUR') %}
+                    <li class="nav-item">
+                        <a class="nav-link" href="{{ path('app_user_index') }}">Liste des Utilisateurs</a>
+                    </li>
+                {% endif %}
             </ul>
         </div>
         {% if app.user %}
diff --git a/templates/user/_delete_form.html.twig b/templates/user/_delete_form.html.twig
new file mode 100644
index 0000000..6d59fa6
--- /dev/null
+++ b/templates/user/_delete_form.html.twig
@@ -0,0 +1,4 @@
+<form method="post" action="{{ path('app_user_delete', {'id': user.id}) }}" onsubmit="return confirm('Are you sure you want to delete this item?');">
+    <input type="hidden" name="_token" value="{{ csrf_token('delete' ~ user.id) }}">
+    <button class="btn">Delete</button>
+</form>
diff --git a/templates/user/_form.html.twig b/templates/user/_form.html.twig
new file mode 100644
index 0000000..bf20b98
--- /dev/null
+++ b/templates/user/_form.html.twig
@@ -0,0 +1,4 @@
+{{ form_start(form) }}
+    {{ form_widget(form) }}
+    <button class="btn">{{ button_label|default('Save') }}</button>
+{{ form_end(form) }}
diff --git a/templates/user/edit.html.twig b/templates/user/edit.html.twig
new file mode 100644
index 0000000..141d94a
--- /dev/null
+++ b/templates/user/edit.html.twig
@@ -0,0 +1,13 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}Edit User{% endblock %}
+
+{% block body %}
+    <h1>Edit User</h1>
+
+    {{ include('user/_form.html.twig', {'button_label': 'Update'}) }}
+
+    <a href="{{ path('app_user_index') }}">back to list</a>
+
+    {{ include('user/_delete_form.html.twig') }}
+{% endblock %}
diff --git a/templates/user/index.html.twig b/templates/user/index.html.twig
new file mode 100644
index 0000000..e2e3f7f
--- /dev/null
+++ b/templates/user/index.html.twig
@@ -0,0 +1,41 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}User index{% endblock %}
+
+{% block body %}
+    <h1>User index</h1>
+
+    <table class="table">
+        <thead>
+            <tr>
+                <th>Id</th>
+                <th>Email</th>
+                <th>Roles</th>
+                <th>Nom</th>
+                <th>Prenom</th>
+                <th>actions</th>
+            </tr>
+        </thead>
+        <tbody>
+        {% for user in users %}
+            <tr>
+                <td>{{ user.id }}</td>
+                <td>{{ user.email }}</td>
+                <td>{{ user.roles ? user.roles[0] : '' }}</td>
+                <td>{{ user.nom }}</td>
+                <td>{{ user.prenom }}</td>
+                <td>
+                    <a href="{{ path('app_user_show', {'id': user.id}) }}">show</a>
+                    <a href="{{ path('app_user_edit', {'id': user.id}) }}">edit</a>
+                </td>
+            </tr>
+        {% else %}
+            <tr>
+                <td colspan="7">no records found</td>
+            </tr>
+        {% endfor %}
+        </tbody>
+    </table>
+
+    <a href="{{ path('app_user_new') }}">Create new</a>
+{% endblock %}
diff --git a/templates/user/new.html.twig b/templates/user/new.html.twig
new file mode 100644
index 0000000..35e728d
--- /dev/null
+++ b/templates/user/new.html.twig
@@ -0,0 +1,11 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}New User{% endblock %}
+
+{% block body %}
+    <h1>Create new User</h1>
+
+    {{ include('user/_form.html.twig') }}
+
+    <a href="{{ path('app_user_index') }}">back to list</a>
+{% endblock %}
diff --git a/templates/user/show.html.twig b/templates/user/show.html.twig
new file mode 100644
index 0000000..ffc5b61
--- /dev/null
+++ b/templates/user/show.html.twig
@@ -0,0 +1,38 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}User{% endblock %}
+
+{% block body %}
+    <h1>User</h1>
+
+    <table class="table">
+        <tbody>
+            <tr>
+                <th>Id</th>
+                <td>{{ user.id }}</td>
+            </tr>
+            <tr>
+                <th>Email</th>
+                <td>{{ user.email }}</td>
+            </tr>
+            <tr>
+                <th>Roles</th>
+                <td>{{ user.roles ? user.roles[0] : '' }}</td>
+            </tr>
+            <tr>
+                <th>Nom</th>
+                <td>{{ user.nom }}</td>
+            </tr>
+            <tr>
+                <th>Prenom</th>
+                <td>{{ user.prenom }}</td>
+            </tr>
+        </tbody>
+    </table>
+
+    <a href="{{ path('app_user_index') }}">back to list</a>
+
+    <a href="{{ path('app_user_edit', {'id': user.id}) }}">edit</a>
+
+    {{ include('user/_delete_form.html.twig') }}
+{% endblock %}