In Chapter 3, we discuss the new Network Admin menu you now have access to in your Dashboard to manage aspects of your network. In this chapter, we explain how users are managed across the network, including how you can change some of the default management options to suit your needs. One of the hardest things for new network admins to understand is that although each site is managed separately, users are global.
That is, after a user logs in, he is logged in across the entire network, has the ability to comment on any site that has enabled the Must Be Logged in to Comment feature in their Discussion Settings page (Book III, Chapter 3). The user can visit the Dashboard of the main site in the install to manage his profile information and access the DashboardMy Sites menu to reach sites that they administer. The user also registers at the main site, and not at individual sites in the network.