Filtering Group Items/Subitem progress into a single line

Hello, Folks,

I’m working on another Master Board functionality, and a question came up I’m hoping to get addressed.

I have a Master Board, broken into Groups, pulling data from other Project Specific Boards, each also broken into groups. What I’m trying to do is condense the progress of each Group’s items into a single line for presentation in the Master Board, but with each Project Specific Group being comprised of Items and Sub-items, I’m not sure what my options are here.

My ideal functionality would be to have a single line that reflects “status of all Items in Group X of Board X”, and have that line reflect in the Master Board, so I can see how each Group from each Board is performing at a glance of the Master Board.

Any help would be appreciated.