Filter events by specific zone in frame

It would be really useful if you could filter your events by a specific zone in the frame.

Right now you can create a detection zone that limits what is recorded, but if I could create a temporary zone used to filter events that would be great.

For example, the other day I was looking for a vehicle that drove down the road at night. I can already filter by vehicle, date, and time (on webview), but my camera is not pointed at the street and there is a lot of other stuff going on. If I could draw a box around the street and find only events where motion was detected in that box it would make finding things so much easier.

[Mod Edit]: Title modified to be more specific and to enhance search clarity.