diff --git a/api-documentation.md b/api-documentation.md
index 8ca5af9..28c19b9 100644
--- a/api-documentation.md
+++ b/api-documentation.md
@@ -32,8 +32,8 @@ A json object for the account to register with **`username`**, **`email`**, **`p
   "email": "jean@example.com",
   "password": "really-strong-password",
   "timezone": "Europe/Brussels",
-  "earliest_time":"09:30 AM",
-  "latest_time":"10:00 PM"
+  "earliest_time":"09:30",
+  "latest_time":"22:00"
 }
 ```
 
@@ -47,8 +47,8 @@ A json object for the registered account with `id`, `username`, `email`, `timezo
   "username": "jean",
   "email": "jean@example.com",
   "timezone": "Europe/Brussels",
-  "earliest_time":"09:30 AM",
-  "latest_time":"10:00 PM"
+  "earliest_time":"09:30",
+  "latest_time":"22:00"
 }
 ```
 
@@ -77,8 +77,8 @@ A json object for the registered account with `id`, `username`, `email`, `timezo
   "username": "jean",
   "email": "jean@example.com",
   "timezone": "Europe/Brussels",
-  "earliest_time":"09:30 AM",
-  "latest_time":"10:00 PM"l
+  "earliest_time":"09:30",
+  "latest_time":"22:00"l
 }
 ```
 
@@ -107,8 +107,8 @@ A json object for the registered account with `id`, `username`, `email`, `timezo
   "username": "jean",
   "email": "jean@example.com",
   "timezone": "Europe/Brussels",
-  "earliest_time": "09:30 AM",
-  "latest_time": "10:00 PM"
+  "earliest_time": "09:30",
+  "latest_time": "22:00"
 }
 ```
 
@@ -306,8 +306,8 @@ A json object for the specified meeting with an array of `participant`.
 			"id": 23,
 			"account_id": 5,
 			"meeting_id": "f86983db-955e-43b8-be3e-bc92bbeb9b43",
-			"earliest_time": "09:30 AM",
-			"latest_time": "05:00 PM",
+			"earliest_time": "09:30",
+			"latest_time": "17:00",
 			"quorum": 1,
 			"mandatory": 1,
 			"host": 1,
@@ -318,8 +318,8 @@ A json object for the specified meeting with an array of `participant`.
 			"id": 28,
 			"account_id": 11,
 			"meeting_id": "f86983db-955e-43b8-be3e-bc92bbeb9b43",
-			"earliest_time": "10:00 AM",
-			"latest_time": "09:00 PM",
+			"earliest_time": "10:00",
+			"latest_time": "21:00",
 			"quorum": 0,
 			"mandatory": 1,
 			"host": 0,
@@ -385,20 +385,19 @@ A json object for the specified meeting with an array of `participant`.
 
 ### **Participants** | `participant`
 
-| field         | data type | metadata                    |
-| :------------ | :-------- | :-------------------------- |
-| id            | int       | primary key, auto-increment |
-| account_id    | varchar   | required                    |
-| meeting_id    | varchar   | required                    |
-| earliest_time | datetime  |                             |
-| latest_time   | datetime  |                             |
-| quorum        | boolean   | `0` (no) or `1` (yes)       |
-| mandatory     | boolean   | `0` (no) or `1` (yes)       |
-| host          | boolean   | `0` (no) or `1` (yes)       |
-| answered      | boolean   | `0` (no) or `1` (yes)       |
-| timezone      | varchar   | required                    |
-| created_at    | datetime  | generated by database       |
-| updated_at    | datetime  | generated by database       |
+| field         | data type | metadata                        |
+| :------------ | :-------- | :------------------------------ |
+| account_id    | varchar   | required, composite primary key |
+| meeting_id    | varchar   | required, composite primary key |
+| earliest_time | datetime  |                                 |
+| latest_time   | datetime  |                                 |
+| quorum        | boolean   | `0` (no) or `1` (yes)           |
+| mandatory     | boolean   | `0` (no) or `1` (yes)           |
+| host          | boolean   | `0` (no) or `1` (yes)           |
+| answered      | boolean   | `0` (no) or `1` (yes)           |
+| timezone      | varchar   | required                        |
+| created_at    | datetime  | generated by database           |
+| updated_at    | datetime  | generated by database           |
 
 #### Invite a participant
 
@@ -428,7 +427,6 @@ A json object for the participant with `id`, `account_id`, `meeting_id`, `earlie
 
 ```
 {
-  "id": 23,
   "account_id": 5,
   "meeting_id": "f86983db-955e-43b8-be3e-bc92bbeb9b43",
   "earliest_time": "08:30",
@@ -443,17 +441,16 @@ A json object for the participant with `id`, `account_id`, `meeting_id`, `earlie
 
 #### Update a participant
 
-**`PUT /api/participants/:id`**
+**`PUT /api/participants/:account_id-:meeting_id`**
 
 ##### Request
 
-A json object for the participant to invite with `id` and any of `id`, `earliest_time`, `latest_time`, `quorum`, `mandatory`, `host`, `answered` and `timezone`.
+A json object for the participant to invite with any of `earliest_time`, `latest_time`, `quorum`, `mandatory`, `host`, `answered` and `timezone`.
 
 ```
 {
-  "account_id": 5,
-  "earliest_time": "09:30 AM",
-  "latest_time": "05:00 PM",
+  "earliest_time": "09:30",
+  "latest_time": "17:00",
   "quorum": 1,
   "host": 1,
   "answered": 1,
@@ -462,36 +459,34 @@ A json object for the participant to invite with `id` and any of `id`, `earliest
 
 ##### Response `200`
 
-A json object for the participant with `id`, `account_id`, `meeting_id`, `earliest_time`, `latest_time`, `quorum`, `mandatory`, `host`, `answered` and `timezone`.
+A json object for the participant with `account_id`, `meeting_id`, `earliest_time`, `latest_time`, `quorum`, `mandatory`, `host`, `answered` and `timezone`.
 
 ```
 {
-  "data": {
-    "id": 23,
-    "account_id": 5,
-    "meeting_id": "f86983db-955e-43b8-be3e-bc92bbeb9b43",
-    "earliest_time": "09:30 AM",
-    "latest_time": "05:00 PM",
-    "quorum": 1,
-    "mandatory": 1,
-    "host": 1,
-    "answered": 1,
-    "timezone": "Europe/Brussels"
-  }
+  "id": 23,
+  "account_id": 5,
+  "meeting_id": "f86983db-955e-43b8-be3e-bc92bbeb9b43",
+  "earliest_time": "09:30",
+  "latest_time": "17:00",
+  "quorum": 1,
+  "mandatory": 1,
+  "host": 1,
+  "answered": 1,
+  "timezone": "Europe/Brussels"
 }
 ```
 
 #### Delete a participant
 
-**`DELETE /api/participants/:id`**
+**`DELETE /api/participants/:account_id-:meeting_id`**
 
 ##### Request
 
-A json object for the participant to delete with `id`.
+A json object for the participant to delete with `token`.
 
 ```
 {
-  "id": 23
+  "token": "lknlkj-kjbkbj-kbjkbj-jkjh"
 }
 ```
 
@@ -501,11 +496,9 @@ A json object for the deleted participant with `participant_username`, `particip
 
 ```
 {
-  "data": {
-    "participant_username": "Sylvia",
-    "participant_email": "sylvia@email.com",
-    "meeting_title": "Worldwide strategy meeting for growth"
-  }
+  "participant_username": "Sylvia",
+  "participant_email": "sylvia@email.com",
+  "meeting_title": "Worldwide strategy meeting for growth"
 }
 ```