What's the easiest way to add a staff user group?
 

What is the easiest way to add an additional staff usergroup? I would like for the group to have less power than global mods - they will keep watch over all sections, have one section they are responsible for, have permission to only edit posts, close threads and also have access to the staff section.

In addition, when adding a moderator to a section, do I have to add them to each board one at a time and select their permissions for each board I add them to or can I duplicate that members permission when I add them to the next section?