Before adding a new developer in app he should receive developer rights from platform with link https://ok.ru/devaccess
To add a developer in the app click the link Developers under the app iframe:
After entering the secret key you get access to the control panel of user roles:
To add or remove a role move your mouse to the user’s photo and select “User roles”:
The user can have all roles simultaneously and some individual rights. Only Supervisor can distribute the rights of the application.