When you are logged in with an admin account, you can manage the accounts registered on the server, you can have access to all configurations in the admin menu.
User Right
If your server has just been launched, and that you have changed the admin master account, you must create a type of user right, under the UserRight menu, this allows you to create a system of right and invitation for the users who will connect to your server.
It is advisable to create an admin type and a user type, you must activate the code prompt if you want users to be able to create their own account.