diff --git a/ChillMainBundle.php b/ChillMainBundle.php
index 7e6620522..6cb83ee50 100644
--- a/ChillMainBundle.php
+++ b/ChillMainBundle.php
@@ -12,6 +12,7 @@ use Chill\MainBundle\DependencyInjection\CompilerPass\ExportsCompilerPass;
 use Chill\MainBundle\DependencyInjection\CompilerPass\WidgetsCompilerPass;
 use Chill\MainBundle\DependencyInjection\CompilerPass\NotificationCounterCompilerPass;
 use Chill\MainBundle\DependencyInjection\CompilerPass\MenuCompilerPass;
+use Chill\MainBundle\DependencyInjection\CompilerPass\ACLFlagsCompilerPass;
 
 
 class ChillMainBundle extends Bundle
@@ -27,5 +28,6 @@ class ChillMainBundle extends Bundle
         $container->addCompilerPass(new WidgetsCompilerPass());
         $container->addCompilerPass(new NotificationCounterCompilerPass());
         $container->addCompilerPass(new MenuCompilerPass());
+        $container->addCompilerPass(new ACLFlagsCompilerPass());
     }
 }
diff --git a/DependencyInjection/CompilerPass/ACLFlagsCompilerPass.php b/DependencyInjection/CompilerPass/ACLFlagsCompilerPass.php
new file mode 100644
index 000000000..9197ddb83
--- /dev/null
+++ b/DependencyInjection/CompilerPass/ACLFlagsCompilerPass.php
@@ -0,0 +1,39 @@
+<?php
+/*
+ */
+namespace Chill\MainBundle\DependencyInjection\CompilerPass;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Chill\MainBundle\Form\PermissionsGroupType;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * 
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+class ACLFlagsCompilerPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        $permissionGroupType = $container->getDefinition(PermissionsGroupType::class);
+        
+        foreach($container->findTaggedServiceIds('chill_main.flags') as $id => $tags) {
+            $reference = new Reference($id);
+            
+            foreach ($tags as $tag) {
+                switch($tag['scope']) {
+                    case PermissionsGroupType::FLAG_SCOPE:
+                        
+                        $permissionGroupType->addMethodCall('addFlagProvider', [ $reference ]);
+                        break;
+                    default:
+                        throw new \LogicalException(sprintf(
+                            "This tag 'scope' is not implemented: %s, on service with id %s", $tag['scope'], $id)
+                            );
+                }
+            }
+        }
+    }
+}
diff --git a/Entity/GroupCenter.php b/Entity/GroupCenter.php
index 429aac3da..d34b86475 100644
--- a/Entity/GroupCenter.php
+++ b/Entity/GroupCenter.php
@@ -58,7 +58,7 @@ class GroupCenter
     
     public function __construct()
     {
-        $this->permissionGroups = new ArrayCollection();
+        $this->permissionsGroup = new ArrayCollection();
         $this->users = new ArrayCollection();
     }
     
diff --git a/Entity/PermissionsGroup.php b/Entity/PermissionsGroup.php
index d3de7e2d5..706c96d3e 100644
--- a/Entity/PermissionsGroup.php
+++ b/Entity/PermissionsGroup.php
@@ -43,6 +43,12 @@ class PermissionsGroup
      */
     private $name;
     
+    /**
+     *
+     * @var string[]
+     */
+    private $flags = [];
+    
     /**
      *
      * @var \Doctrine\Common\Collections\Collection
@@ -109,6 +115,19 @@ class PermissionsGroup
         }
     }
     
+    public function getFlags()
+    {
+        return $this->flags;
+    }
+
+    public function setFlags(array $flags)
+    {
+        $this->flags = $flags;
+        
+        return $this;
+    }
+
+        
     /**
      * Test that a role scope is associated only once with the permission group
      * 
diff --git a/Form/PermissionsGroupType.php b/Form/PermissionsGroupType.php
index 20109d095..d9b4ab730 100644
--- a/Form/PermissionsGroupType.php
+++ b/Form/PermissionsGroupType.php
@@ -5,9 +5,20 @@ namespace Chill\MainBundle\Form;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Chill\MainBundle\Form\Utils\PermissionsGroupFlagProvider;
+use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
 
 class PermissionsGroupType extends AbstractType
 {
+    /**
+     *
+     * @var PermissionsGroupFlagProvider[]
+     */
+    protected $flagProviders = [];
+    
+    const FLAG_SCOPE = 'permissions_group';
+    
     /**
      * @param FormBuilderInterface $builder
      * @param array $options
@@ -15,8 +26,40 @@ class PermissionsGroupType extends AbstractType
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
         $builder
-            ->add('name')
+            ->add('name', TextType::class)
         ;
+        
+        $flags = $this->getFlags();
+        
+        if (count($flags) > 0) {
+            $builder
+                ->add('flags', ChoiceType::class, [
+                    'choices' => \array_combine($flags, $flags),
+                    'multiple' => true,
+                    'expanded' => true,
+                    'required' => false
+                ]);
+        }
+    }
+    
+    /**
+     * 
+     * @return array
+     */
+    protected function getFlags(): array
+    {
+        $flags = [];
+        
+        foreach ($this->flagProviders as $flagProvider) {
+            $flags = \array_merge($flags, $flagProvider->getPermissionsGroupFlags());
+        }
+        
+        return $flags;
+    }
+    
+    public function addFlagProvider(PermissionsGroupFlagProvider $provider)
+    {
+        $this->flagProviders[] = $provider;
     }
 
     /**
diff --git a/Form/Utils/PermissionsGroupFlagProvider.php b/Form/Utils/PermissionsGroupFlagProvider.php
new file mode 100644
index 000000000..39ddb62d5
--- /dev/null
+++ b/Form/Utils/PermissionsGroupFlagProvider.php
@@ -0,0 +1,18 @@
+<?php
+
+
+namespace Chill\MainBundle\Form\Utils;
+
+/**
+ *
+ * 
+ */
+interface PermissionsGroupFlagProvider
+{
+    /**
+     * Return an array of flags
+     * 
+     * @return string[] an array. Keys are ignored.
+     */
+    public function getPermissionsGroupFlags(): array;
+}
diff --git a/Resources/config/doctrine/PermissionsGroup.orm.yml b/Resources/config/doctrine/PermissionsGroup.orm.yml
index f83b6c78d..a8b5daa12 100644
--- a/Resources/config/doctrine/PermissionsGroup.orm.yml
+++ b/Resources/config/doctrine/PermissionsGroup.orm.yml
@@ -14,6 +14,10 @@ Chill\MainBundle\Entity\PermissionsGroup:
         name:
             type: string
             length: 255
+        flags:
+            type: json
+            options: 
+                default: '[]'
     manyToMany:
         roleScopes:
             targetEntity: Chill\MainBundle\Entity\RoleScope
diff --git a/Resources/config/services/form.yml b/Resources/config/services/form.yml
index 293de5e7c..d9f8a5700 100644
--- a/Resources/config/services/form.yml
+++ b/Resources/config/services/form.yml
@@ -33,6 +33,7 @@ services:
             - "@doctrine.orm.entity_manager"
         tags:
             - { name: form.type, alias: select2_chill_language }
+            
     chill.main.form.type.center:
         class: Chill\MainBundle\Form\Type\CenterType
         arguments:
@@ -130,5 +131,9 @@ services:
         arguments:
             $chillLogger: '@monolog.logger.chill'
             $passwordEncoder: '@Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface'
+        tags:
+            - { name: form.type }
+            
+    Chill\MainBundle\Form\PermissionsGroupType:
         tags:
             - { name: form.type }
\ No newline at end of file
diff --git a/Resources/migrations/Version20180905101426.php b/Resources/migrations/Version20180905101426.php
new file mode 100644
index 000000000..2f7d1afc2
--- /dev/null
+++ b/Resources/migrations/Version20180905101426.php
@@ -0,0 +1,25 @@
+<?php declare(strict_types=1);
+
+namespace Application\Migrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20180905101426 extends AbstractMigration
+{
+    public function up(Schema $schema) : void
+    {
+        $this->addSql('ALTER TABLE permission_groups ADD flags JSONB DEFAULT \'[]\' NOT NULL');
+        $this->addSql('ALTER TABLE group_centers ALTER permissionsgroup_id DROP NOT NULL');
+
+    }
+
+    public function down(Schema $schema) : void
+    {
+        $this->addSql('ALTER TABLE permission_groups DROP COLUMN flags');
+        $this->addSql('ALTER TABLE group_centers ALTER permissionsgroup_id SET DEFAULT NULL'); 
+    }
+}
diff --git a/Resources/translations/messages.fr.yml b/Resources/translations/messages.fr.yml
index 120a529d9..90baaa4dc 100644
--- a/Resources/translations/messages.fr.yml
+++ b/Resources/translations/messages.fr.yml
@@ -129,6 +129,7 @@ Edit password for %username%: Éditer le mot de passe de %username%
 Change password: Changer le mot de passe
 Back to the user edition: Retour au formulaire d'édition
 Password successfully updated!: Mot de passe mis à jour
+Flags: Drapeaux
 
 #admin section for circles (old: scopes)
 List circles: Liste des cercles
diff --git a/Resources/views/PermissionsGroup/edit.html.twig b/Resources/views/PermissionsGroup/edit.html.twig
index 43ffd6a62..2d56b8602 100644
--- a/Resources/views/PermissionsGroup/edit.html.twig
+++ b/Resources/views/PermissionsGroup/edit.html.twig
@@ -9,6 +9,7 @@
     
     {{ form_start(edit_form) }}
     {{ form_row(edit_form.name) }}
+    {{ form_row(edit_form.flags) }}
     {{ form_row(edit_form.submit, { 'attr': { 'class': 'sc-button green' } } ) }}
     {{ form_end(edit_form) }}
     
diff --git a/Resources/views/PermissionsGroup/new.html.twig b/Resources/views/PermissionsGroup/new.html.twig
index e28e60992..16a6fb817 100644
--- a/Resources/views/PermissionsGroup/new.html.twig
+++ b/Resources/views/PermissionsGroup/new.html.twig
@@ -7,6 +7,7 @@
 
     {{ form_start(form) }}
     {{ form_row(form.name) }}
+    {{ form_row(form.flags) }}
     {{ form_row(form.submit, { 'attr': { 'class': 'sc-button green' } } ) }}
     {{ form_end(form) }}