Only Administrators can add users to the system. Once user accounts have been created, then project managers can add them to project teams.
Can be used only by the user who has been assigned that license. Users who receive the named user licenses are guaranteed access.
You can add as many users as you choose, but access is granted only to users with named user licenses or to users who receive concurrent licenses as they log on. If you have named user licenses, you must assign them to specific users.