Doorbell 3 - Adjust Motion Zones

I have recently bought the Doorbell 3. My Ring App offers me only 4 motion zones 1 half circle 3-4m from the camera 1 field 4m+ from the camera (left, middle, right) which I can only switch on and off. The middle field is too big and covers the street in front of our house. But I can only set on or off. If it's on, the street is covered (what I don't want), if it's off not all people moving to the door are captured by the video. I have seen on websites, that I can invididually adjust the motion zones but my app does not offer that option. What can I do to change this?