diff --git a/Documents/proto/general/openapi.yaml b/Documents/proto/general/openapi.yaml
index 7081464..4b8df80 100644
--- a/Documents/proto/general/openapi.yaml
+++ b/Documents/proto/general/openapi.yaml
@@ -57,7 +57,7 @@ paths:
         - Users
       security:
         - bearer: []
-      responses:
+      responses: 
         '200':
           description: Ok
           content:
@@ -190,6 +190,12 @@ paths:
         '401':
           $ref: '#/components/responses/UnauthorizedError'
   /courses/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
     get:
       summary: see courses informations 
       tags:
@@ -202,12 +208,7 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Course'
-    parameters:
-      - name: id
-        in: path
-        required: true
-        schema:
-          type: integer
+
     delete:
       summary: delete a course 
       tags:
@@ -267,7 +268,7 @@ paths:
       summary: Create a cursus
       tags:
         - General
-        - cursus
+        - Cursus
       security: 
         - bearer: []
       requestBody:
@@ -299,7 +300,7 @@ paths:
       summary: See Cursus's informations 
       tags:
         - General
-        - cursus
+        - Cursus
       responses:
         '200':
           description: OK
@@ -317,7 +318,7 @@ paths:
       summary: Delete cursus
       tags:
         - General
-        - cursus
+        - Cursus
       security: 
         - bearer: []
       responses:
@@ -329,7 +330,7 @@ paths:
       summary: Modify cursus 
       tags:
         - General
-        - cursus
+        - Cursus
       security:
         - bearer: []
       requestBody:
@@ -365,14 +366,249 @@ paths:
         '401':
           $ref: '#/components/responses/UnauthorizedError'
           
+             
+  /lesson:
+    post:
+      summary: create a new lesson
+      tags:
+        - Secretariat
+        - Lesson
+        - Ext (Schedule)
+      security: 
+        - bearer: []
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                date:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                CourseId:
+                  type: integer
+                duration:
+                  type: number
+                classroom:
+                  type: string
+      responses:
+        '201':
+          description: Lesson created 
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+  /lesson/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
+    get:
+      summary : See lesson's informations
+      tags:
+        - Users
+        - Lesson
+        - Ext (Schedule)
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Lesson'
+    patch:
+      summary : Modify Lesson
+      tags:
+        - Secretariat
+        - Lesson
+        - Ext (Schedule)
+      security:
+        - bearer: []
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+             schema:
+              type: object
+              properties:
+                date:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                IDcourse:
+                  type: integer
+                duration:
+                  type: number
+                classroom:
+                  type: string
+      responses:
+        '201':
+          description: Lesson modified
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
           
+    delete:
+      summary: Delete lesson
+      tags:
+        - Lesson
+        - Secretariat
+        - Ext (Schedule)
+      security: 
+        - bearer: []
+      responses:
+        '201':
+          description: Success
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+  /scheduleRequest:
+    post:
+      summary: Create a new request
+      tags:
+        - Teacher
+        - ScheduleRequest
+        - Ext (Schedule)
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                requestType:
+                  type: string
+                lessonId:
+                  type: integer
+                newDate:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                newClassroom:
+                  type: string
+                newCourseId:
+                  type: integer
+      responses:
+        '201':
+          description: Request created 
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+
+  /scheduleRequest/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
+    get:
+      summary : See request information
+      tags:
+        - Teacher
+        - Secretariat
+        - ScheduleRequest
+        - Ext (Schedule)
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ScheduleRequest'
+    patch:
+      summary : Modify request
+      tags:
+        - Teacher
+        - ScheduleRequest
+        - Ext (Schedule)
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+             schema:
+              type: object
+              properties:
+                newDate:
+                  type: string
+                newClassroom:
+                  type: string
+                newCourseId:
+                  type: integer
+      responses:
+        '201':
+          description: Request modified
+    delete:
+      summary: Delete request
+      tags:
+        - Teacher
+        - Secretariat
+        - ScheduleRequest
+        - Ext (Schedule)
+      responses:
+        '201':
+          description: Success
+  
+  /display:
+    post:
+        summary: Create a new display
+        tags:
+          - Display
+          - Ext (Schedule)
+        requestBody:
+          required: true
+          content:
+            application/x-www-form-urlencoded:
+              schema:
+                type: object
+                properties:
+                  timeMode:
+                    type: string
+                  displayMode:
+                    type: string
+                  userId:
+                    type: integer
+        responses:
+          '201':
+            description: display created 
           
-          
-
-
-
-
-# Extension publication scientifique 
+  /display/{id}:
+    parameters:
+        - name: id
+          in: path
+          required: true
+          schema:
+            type: integer
+    get:
+      summary : See display information
+      tags:
+        - Users
+        - Display
+        - Ext (Schedule)
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Display'
+    patch:
+      summary : Modify display
+      tags:
+        - Users
+        - Display
+        - Ext (Schedule)
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+             schema:
+              type: object
+              properties:
+                  timeMode:
+                    type: string
+                  displayMode:
+                    type: string
+      responses:
+        '201':
+          description: Display modified
+ # Extension publication scientifique 
 
   /article:
     post:
@@ -421,7 +657,6 @@ paths:
         "views": 420,
         "authors" : []
         }
-              
   /article/{id}:
     parameters:
       - name: id
@@ -445,7 +680,7 @@ paths:
                   $ref: '#/components/schemas/Article'
         '401':
           $ref: '#/components/responses/UnauthorizedError'
-    
+          
     patch:
       summary: modify an article
       tags:
@@ -634,7 +869,6 @@ components:
         "id": 42,
         "courses": ['Math', 'Info']
         }
-        
     Article:
       type: object
       properties:
@@ -695,11 +929,82 @@ components:
         "title": "graph's second theorem study",
         "author" : "john doe"
         }
-      
-        
+    Lesson :
+      type: object
+      properties:
+        id:
+          type: integer
+        date:
+          type: string
+          description: Follow the iso 8601 ("YYYY-MM-DD")
+        duration:
+          type: number
+          description: duration of a course in hours
+        classroom:
+          type: string
+        courseId:
+          type: integer
+      example:
+          {
+            "id": 12,
+            "date": "2023-12-01",
+            "duration": 1.5,
+            "classroom": "AMPHI01",
+            "courseId": 12
+          }
+    ScheduleRequest:
+      type: object
+      properties:
+        id:
+          type: integer
+        requestType:
+          type: string
+        lessonId:
+          type: integer
+        teacherId:
+          type: integer
+        newDate:
+          type: string
+          description: Follow the iso 8601 ("YYYY-MM-DD")
+        newClassroom:
+          type: string
+        newCourseId:
+          type: integer
+      example:
+        {
+          "id": 12,
+          "requestType": "moveLesson",
+          "lessonId": 52,
+          "teacherId": 12,
+          "newDate": "2023-12-20",
+          "newClassroom":,
+          "newCourseId":,
+        }
+    
+    Display:
+      type: object
+      properties:
+        id:
+          type: integer
+        timeMode:
+          type: string
+          description: Define the period displayed on the schedule (week,month,quadrimester..)
+        displayMode:
+          type: string
+        userId:
+          type: integer
+          description: Id of the user who owns this display
+      example:
+        {
+          "id": 12,
+          "timeMode": "month",
+          "displayMode": "grid",
+          "UserId": 12
+        }
   responses:
     UnauthorizedError:
       description: Unauthorized access or missing bearer 
 
 
 
+