# Access Control
Initially, there is only one account on the server - this is the admin, who has the Administrator role. You can change its login and password in the directory. Deleting this account is prohibited.
The TrueConf MCU implements a multi-user administration system:
administrator - by default, has all rights to manage the server;
operator — plans and conducts conferences, creates user accounts. Does not have access to server settings and user roles.
To configure roles, go to Administration → Roles. When you select a role, you will see a card with basic information about it:
the list of users assigned to it.
# Adding a new user
To assign a user to a role, first add them to the directory.
To add a user:
Select a role.
Press the Add button.
In the list, select users and press the Add button.