Once you have drawn a path for your animation, you can easily add control points to the path if you want. Adding control points can help you expand your path where needed, or provide a point to attach a sound to.
To add a control point to your path:
Select Tools
> Animation > Add Control Point, or click the Add Control
Point button on the Animation toolbar.
Click where you want to add the control point. A control point is automatically added to the path.