Adjust frame/cropping in split screen
I'm making a video using the split screen effect. The default cropping lops off the left and right side of the screen, leaving the middle portion. Is it possible to adjust this cropping? I would like the left side of one clip and the right side of the other, so that everything important fits in the frame. When I go to adjust the cropping, it is locked into the aspect ratio, which is not what I want, because once the screen is split, that will not be the aspect ratio of each clip; is that clear?
MacBook Pro, macOS High Sierra (10.13.6)