There is a motion search tool. You canDrag a box to select the area you would like to detect and the dashboard will return a list of video clips showing motion within that area. Motion search allows users to view only what’s important, eliminating the need to stream hours or even days of footage just to identify key events. Under the Settings Tab Header in the Camera section you can select Quality & Retention and Enable Motion-Based retention. It was still in Beta availabilty the last time I checked but my be in full production now.