To work with multiple key frames or edit the motion path, click on the Multiple Key Frame button in the tool bar.

You can edit many aspects of the motion of your photos using this view.

You can click on the borders of the selected key frame to select and resize it.

You can click outside the control points of the selected key frame to rotate it. Position the mouse further out from the center of the keyframe, just beyond the control points. The cursor will change to a rotation cursor when you have it positioned properly.

You can click and drag on the border or center of any key frame to select and drag it. If key frames are overlapping, clicking on the border is one way to ensure that you are dragging the proper key frame.

You can click and drag on any of the blue motion paths to select and drag them.

You can choose View → Zoom In or View → Zoom Out to zoom in and out in order to see outside the bounds of the photo.