If this counting of users is at all related to a license audit or preparation for a license audit you would be very well advised to get professional help. However, licensing is not something that you really want to explore via free advice on open forums.
Licensing is ugly, unpleasant, and nobody wants to deal with it. Techies often despise it and either think that everything ought to be free or that the policies they grew up with 20 years ago still apply. That often leads to a very wide gap between what the business is paying for and what is actually deployed.
Like it or not it is real. And like it or not Progress has a team dedicated to performing audits.
I know it sounds self-serving but we can help you with this. The worst thing you can do if you get the audit letter from Progress is to try to handle it yourself. Yes, we are expensive but we often save clients 6 figures or more and our fees are just a tiny drop in that bucket. The *best* time to get outside help is *before* you get that letter. If you proactively address issues ahead of time you can avoid all of the penalties and do it largely on your own terms.