To add user, click to 'Create new user' button. From this modal, Follow the next steps :

1. Creation mode

2. User info : Personal data

3. User scopes : Manage the user's inheritance scope, i.e. its connected user base:

•    self: only him
•    users (): all data of specified users
• teams: all data of users connected to specified teams
• Account: all users of this account

4. Access rights : Manage permissions & rights in all pages 

5. Data permisions : Manage data visibility of all pages

6. Communication types : manage communication visibility

7. Integrations : manage integration visibility