I'm sorry, but I don't think I understand. If English is not your first language, you might want to use less complicated words. "Departing" and "articulated" are not correct here.
If your question is, "I need to find out what PC a user is logged into," the answer is, "there is no place to query that from." Nothing on the network keeps track of what computers a user has logged into. You would have to query every computer on the network. You could possibly use Win32_Session to see what users have sessions on each computer.