Currently, there is no way of knowing how many users are logged in CM1/Percussion.
I believe by revising and improving Process Monito r should help a lot. I added the last row called Users Online with LDAP, Local and Offline (links including), or perhaps add to the top of row instead…
I think you should make the numbers of users clickable (bring in new window) and tell you who is online and how long been online (including idling session). IMO.