Checkpoint FR3 - how many SecureClient Licenses are in Use?

Hi! We are using Checkpoint FR3 with a 25 user License for the SecureClient-Access. Is there a way to find out, how many of the licenses are currently used and how many are free? The authentification runs via LDAP against a ADS, whrere is defined a group CPSecureClientUsers. The group has more then 25 members, which currently does not cause problems, they are all enabled to use the secure client, but not all of then do it really. Is there a way do kill orphaned usages? Rgds UK DD, Germany