The nested recordset is probably the easiest:
[Recordset for Groups]
[Repeat Region for Groups]
[Recordset for Options (filtered with Recordset for Group)]
[Repeat Region for Options]
[End Repeat Region for Options]
[End Repeat Region for Groups
Thanks for your reply, Ray.
Just a question: is there a way to intercept the group change? In the (really) old Adobe ADDT extensions there was a server behaviuor like this: "display field if changed."
I can't find anything similar in the WA databridge tools.
Is this doable only by hand coding?