highly experienced Custom Empaneled Chartered Engineer in the field of International Business Advisory & Engineering, with over 28 years of expertise. He is an "Approved Valuer" by CBOT and is .

If it was me, who's really dumb about scripting, I'd just place a group joiner for the appropriate group at each arrival point.

Ah, I didn't understand what you meant.  The best you can do is include a full perm object that contains a group joiner script and the UUIDs of each of the six groups.  Then a person just has to rez the object and click it to get the joiner menu.

Or do as Lindal suggested, which is much easier.  ;)