Ring Doorbell 3 - No slider to adjust zones

I have a Ring 3 doorbell running off battery. When setting up motion zones, in the IOS app, there is no slider to adjust the zone distance.The only distances I can select is in the motion wizard when indicating how far I am from a road.I would like to have all my zones active, but I need to tweak them a little.Any advice on how to adjust the distance of motion zones?