When I go to the camera and set the detection zone it appears to be ignored. Motion detection Notification and recording continues to be triggered for the entire camera view?
In your other post you said you have some rules set up for motion detection. I would try disabling all camera Rules for now and see if your detection zone works as expected. If not, this Support article has a good explanation of detection zones:
If it’s still not working after disabling Rules and checking the settings let us know and we’ll be happy to help you troubleshoot further!