James:
I'm allmost there (now I'm thinking like this)
1) authorize_group_check_query: to check of the user is in a group
2) authorize_group_check_query: retrieve the check-items for this group
(which is my solution)
3) authorize on the check-items. if the expression is like this "whether
or not to authorize a request, such as User-Password == "mypassword", or
Calling-Station-Id != "5554796".
will all users in the same group authorize by the same password?
I guess my question is: Is the group check additional to the user check.