Apple Motion 3 - Manual (Page 1081)

Chapter 12 Using Shapes and Masks 1081
The shape’s control points appear in the Canvas. In this example, the selected shape is
the lower lip of the mouth illustration.
2 Enable Record (press A).
3 Move to the frame where you want to change the shape, then make any necessary
changes to the shape’s control points.
In the Keyframe Editor (and also in the Timeline, if the Show/Hide Keyframes button is
turned on), a keyframe appears for each adjustment you make at a new frame.
Note: Adjusting a shape while the playhead is on an already existing keyframe adjusts
the shape at that keyframe.
Record button