The maximum number of simultaneous connections for a User can be set at the Site, User Setting Level, and User level.
The Site level sets the limits of the User and User Setting Levels. For example, if the Site level Max connections per user is set to five, and a user's User level Max connections per user is set to ten, the user can have a maximum of five simultaneous connections.
To set maximum connections per user account at the user and User Setting Level
In the Administrator, connect to the server, then click the Server tab.
In the left pane, click the user or User Setting Level you want to configure.
In the right pane, click the Quota tab.
Select the Max connections per user check box, then specify the maximum number of simultaneous connections to the Site for this user. A gray check mark indicates the selection is enabled at the parent level (User Setting Level or Site).