Got it. The solution is:
- User a Group Focus object
- Set it relative to an item within the cell of the RG (but not the RG itself)
One Important Addition. The trick to getting Group Focus to work with a RG is to set it as a regular Group first (not a Group Focus). Then set it up to display on hover, etc. Once that logic is set-up, then “Replace” the Group with a Group Focus, and you can set the content within the Group Focus to reference the RG’s cell. The logic of display on hover continues to work (but isn’t available to be created when it’s a Group Focus) so it’s quite an elaborate work-around.