MyChat Client has a special tool to manage users account for entering the corporate messenger. All of them are "linked" to those MyChat Server addresses under which they registered.

 

MyChat Client is called from a main menu ("MyChat" -> "Account manager", Alt+A):

 

MyChat Client account manager

 

An administrator should disable this rule if he do not want a user to disconnect from the server, register new accounts, or exit the program.

 

By default, the rule is enabled.