Usergroups and Permissions 
vBulletin organizes permissions for various functions with a usergroup system. By default there are seven usergroups including Administrators, Super Moderators, Moderators, Registered Users and Guests.

You can use the Usergroup Manager to edit the various permissions for each group, or even add new usergroups to create a specialized permissions system unique to your own board.

Also under the usergroups section, you will find the necessary tools for setting specific usergroup-based permissions for individual forums, and the all-important Administrator Permissions tool, which allows Super Administrators to limit the powers of their co-administrators.
User Contributed Notes: Usergroups and Permissions Add a Comment