Viewing PC Name that user is logged into?

Is there a way to view what PC (name) a user is logged into? We use Openfire with Spark and have a staff of about 20 people on at a time but they move around from their offices to reception desks and whatnot. It would be really helpful to see where each person is located via PC name.

I have already replied on your other thread. For admins it is possible, but there is no quick way to see that info in Spark.