Yes, this should be possible right now.
For the usergroup u want to have access and play for free, follow these steps:
1) Admin CP -> Usergroups -> Usergroup Manager -> Arcade Permissions -> Set it so they Can View Arcade and Can Play Arcade.
2) Admin CP -> Usergroups -> Usergroup Manager -> vbBux vbPlaza Permissions -> Can this group play the Arcade for free? -> Set to Yes.
Then for ur normal users who have to pay to play, just enable the Arcade Permissions for them for Can View Arcade / Can Play Arcade. As the Can this group play the Arcade for free? is already set to no by default.
That should do it for u.
-CMX
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