diff --git a/Documents/proto/general/openapi.yaml b/Documents/proto/general/openapi.yaml
index 5751404..55e8168 100644
--- a/Documents/proto/general/openapi.yaml
+++ b/Documents/proto/general/openapi.yaml
@@ -10,6 +10,15 @@ servers:
   - url: https://clyde.herisson.ovh/api
     description: default api point for clyde's service
 
+tags:
+  - name: default
+  - name: General
+    description: General endpoints 
+  - name: Ext (scientific articles)
+    description: Scientifics articles extension's endpoints
+  - name: Ext (Schedule)
+    description: Schedule extension's endpoints
+
 paths:
   /ping:
     get:
@@ -35,8 +44,7 @@ paths:
           name: type
           required: false 
           schema:
-            type: string
-            enum: [teacher, student, secretary]
+            $ref: '#components/schemas/Roles'
       responses: 
         '200':
           description: OK
@@ -89,6 +97,8 @@ paths:
                 BirthDate:
                   type: string
                   description: Follow the iso 8601 ("YYYY-MM-DD")
+                Role:
+                  $ref: "#/components/schemas/Roles"
               example:
                 {
                 "LastName": "Doe" ,
@@ -98,6 +108,7 @@ paths:
                   "Address": "Rue de Tournais 42",
                   "Country": "BE"},
                 "BirthDate": "1941-02-22",
+                "Role": "student"
                 }
       responses:
         '201':
@@ -244,7 +255,8 @@ paths:
                 faculty:
                   type: string
                 teachers:
-                  $ref: '#/components/schemas/User'
+                  type: integer
+                  description: Teacher's identifier
                 assistants:
                   type: array
                   items:
@@ -295,8 +307,6 @@ paths:
           description: Cursus created 
         '401':
           $ref: '#/components/responses/UnauthorizedError'
-          
-          
   /cursus/{id}:
     get:
       summary: See Cursus's informations 
@@ -691,7 +701,7 @@ paths:
           required: true
           content:
             application/x-www-form-urlencoded:
-              schema:    
+              schema:
                 type: object
                 properties:
                   timeMode:
@@ -912,7 +922,6 @@ paths:
                   items:
                     $ref: "#/components/schemas/DisplayArticle"
 
-
 components:
   securitySchemes:
     bearer:
@@ -937,6 +946,8 @@ components:
         birthDate:
           type: string
           description: Follow the iso 8601 ("YYYY-MM-DD")
+        role:
+          $ref: '#/components/schemas/Roles'
       example:
         {
         "regNo": 42,
@@ -947,7 +958,7 @@ components:
           "address": "Rue de Tournais 42",
           "country": "BE"},
         "birthDate": "1941-02-22",
-        "staffMember": true,
+        "role": "student"
         }
     Address:
       type: object
@@ -1006,6 +1017,9 @@ components:
         "id": 42,
         "courses": ['Math', 'Info']
         }
+    Roles:
+     type: string
+      enum: [teacher, student, secretary]
 
     RegRequest:
       type : object
@@ -1218,9 +1232,8 @@ components:
         }
 
   responses:
-      UnauthorizedError:
-        description: Unauthorized access or missing bearer 
-  
+    UnauthorizedError:
+      description: Unauthorized access or missing bearer