That's exactly what I was looking for. I did search, not sure why I didn't find it. Thank you.This thread help?
Or as you hopefully saw in that thread, turn your phone sideways and the Add Feedback button is visible. šWell, nothing guarantees figuring it out for yourself like asking others.
If anyone else is looking for this, tap/click the name of the person for whom you want to leave feedback, then tap/click "Add Feedback."