A user account can be enabled or disabled for use.
Select Tools > Administration > Global Settings.
In the Global Settings dialog box, select the Security tab, and then click Manage Access.
In the User and Group Management dialog box, select the Users tab.
To enable user account, do one of the following:
To disable user account, do one of the following:
Alternatively, you can set the Disable On date to disable the user account automatically from Edit User Profile. See Edit a User Profile.