First you need to have a way of understanding if a cell in a repeating group is selected. (Basically that’s all you need.) I discuss this in the following video. Don’t be put off by the title. The point of this is “how do I let user select something in a repeating and then do something based on that selection?”
I get to where you want to be at about the 20 - 23 minute mark. I think by then you’ll grok the idea!
