Access Masks 
General information on access masks is available here.
This section allows you to edit or remove existing access masks more quickly. It is accessible through Users > Access Masks.

At the top, you will see this Additional Functions table; these options are detailed in the following section.

Below this is a forum-by-forum view of your existing access masks.

For each forum with access masks you will have the following options:
User Contributed Notes: Access Masks Add a Comment