A.
Move Layer Normally
1. Drag the timeline pointer to any frame, then click a layer, Drag to move up and down.
2. Drag the timeline pointer along the timeline to preview animation.
B.
Move Layer with Ctrl Key
1. Drag the timeline pointer to hit a Motion Point, then click a layer, Keep Ctrl key pressing, Drag to move up and down.
2. Drag the timeline pointer along the timeline to preview animation.