The zone select for detecting movement is great, but it is of limited benefit by the fact that you can only select a rectangular area. You might want to exclude two separate windows for example but not the space between them. It would be much more useful if: a) you could create multiple rectangles to exclude areas, as opposed to the current single rectangle to “include” an area to detect. or b) do it “a la Y-Cam”. This is: divide the screen in a grid and click on the squares you want to exclude from motion detection.
Hope this helps