To stop usage from a SELECTserver activation key:

1. Disable the Activation Key (The key you wish to stop generating usage)
2. Create entitlement Group
   1. Create a new Entitlement Group
   2. Assign a User to the Group (this needs to be done to make sure the following changes don’t impact CONNECTED users).
   3. Add Allowed Application(s)
3. Map an Activation Key to an Entitlement Group  (Keys being used by their organization)
4. Restrict access by changing the Default Access from "Allowed" to "Denied"