The way I have it at the moment I hit add photo video put in my main scene, then I had my music. I hit add photos video again choose my second scene and hit and has overlay take out all the parts I don't want save it. Go back to the first clip in that track, highlight it click add photo video and click add as overlay again. At this point I had two overlay tracks. when I try and add the third track in the same manner highlighting the first clip in overlay two then clicking add photo video selecting the video and choosing add has overlay, it places the video on overlay one, instead of placing it on overlay three. Am I missing something simple?