8 On the Assign Position Controller dialog, double-click Position List.
9 On the Assign Controller rollout > Position:Position List track, click the
+ icon to expand the position list.10 Click the Available track, then click the Assign Controller button again.
11 On the Assign Position Controller dialog, double-click Position XYZ.
In the explorer, a second Position XYZ: Position track has been created
below the first. This track represents the controller that will control
keyframe information of X, Y, and Z axes based on the local position of
the child object (the front left wheel).
Next, you will repeat the procedure by assigning a List controller to the
rotation track of the front left wheel.12 On the Assign Controller rollout list of tracks, click Rotation: Euler XYZ
and click the Assign Controller button.