Administrators are users with special privileges to help around the wiki that is inaccessible by regular users. Administrators can block a user (and vice versa), protect/lock a page (and vice versa) for a specific group, delete pages, change wiki features, edit the interface, and other things. Being an administrator also means the user has access to rollback and chat moderator rights. It is best advice that all users with rights follow the Staff Policy or risk their rights being removed.