Parented Object Centers Redux...

Sorry guys, I did a search on this before posting but none of the “object center” threads seemed to answer exactly what my issue is.

I have a bunch of parented items, and I want them to rotate around the collective center of the entire group, not just pivot around the parent item’s center.

Changing the pivot options doesn’t seem to help, unless I could get that cursor into the exact center of all the objects, but alas how can I do that?

Do I need to group them somehow? I tried that but it did not seem to change my options, unless I’m missing some element of the process.

Thanks for any help you can provide.