How to activate and set sensitivity on each motion zone on ring doorbell 2

I can set and save motion zones in my app for my ring doorbell 2. I can set sensitivity, but how can I set sensitivity for each zone? For instance the zone closest to the road I would like less sensitivity but the zone in my side yard I would like increased sensitivity. There is no option to “activate” each zone. I can create and save them and rename them but I’m unsure which or if all are active?