I think I'm phrasing this wrong on my searches, because I can't find anything definitive. But when enabling Use Zones and Hot Spots, do I want to color the area that I want to monitor for movement yellow? Or do I want to use the yellow to block the areas that I don't want to detect for motion?

For instance, in this picture, which zone - A or B - would be detected for motion and which would be ignored?

For instance, in this picture, which zone - A or B - would be detected for motion and which would be ignored?