Currently it's done manually assigning service domain by User options > User maintenance, selecting a user and clicking on button "Other information" and then with "new" button defining a "service domain" and "user class" for a particular user. This involves a lot of manual effort and time. The target is to reduce this manual effort and time to assign the user class to a Service Domain if there are multiple users with the same classes and same Service Domain. How to assign service domains to multiple users classes?
Stat 5.7.x have the ability to synchronize the User Access information for Service Domain Access/Rights. This is done by Stat client from Maintenance | Security Settings | User Maintenance >> Synch button.