Be aware that AutoArchive works with more than e-mail: It works with items from the calendar and for tasks as well. And just as you can customize settings for e-mail (by right-clicking the folder in the Navigation Pane and clicking Properties), you can customize the settings for the Calendar or Tasks folders. You'll get a chance to see exactly how to do this in the practice session, which is coming up next.
Note that when it comes to people, the rules for archiving do not apply. In Outlook, you keep track of people with contacts, and contacts are not archived.