The Permissions Screen allows you to manage User Permissions for all users from a single screen.

To get to this screen: click on the Admin Link in the Sidebar to get to the Administration Screen, then click on 'Permissions' at the top of the screen.

You can view users in only a certain group by using the 'Select Group' drop down. You can assign a certain permission to all visible users by checking the box in that column above the first user in the list.

To access this screen, you must be able to modify users.