[otrs] How can I disable a module?

Hi all I want to disable the module that lets you assign a group to a user. I managed to hide the "Users <-> Groups" menu link through SysConfig, but the module is still active if I type directly its url: http://host/otrs/index.pl?Action=AdminUserGroup. I saw in the demo system at otrs.com a module that has been disabled and when I went to its page it shows this message in red "Sorry, feature not active!". How can I do the same thing with AdminUserGroup? Thanks _________________________________________________________________ More than messages–check out the rest of the Windows Live™. http://www.microsoft.com/windows/windowslive/