If you log in from a dumb terminal, we count the tty name. If you can somehow arrange for the tty names to be the same between to tty sessions, we will only count you as one user (again, allowing up to 4 duplicates).

That's a little hard to understand, so here's the test: Log into APPX, then press Option-99 from the main menu, then Option-1. Look at the Workstation name. Then do the same in another session.

If the Workstation names are identical you are only consuming one user-right. If they are different, you are consuming two user-rights.