Step:
Create an object by using an oval tool
Step:
Right click on any empty frame from time line and select insert KeyFrame
Step
Delete your shape (the oval)
step
Create a new shape. for instance a Rectangle Tool.
Step
Right Click any where between your starting and ending frame
Step
From properties pannel select use Tween Drop down and select Shape
Step:
If you see an arrow line on your time line, You are done…. Good Job
Step:
Now test your movie by click on Control Menu and Test Movie
You can also test your movie By using Key board keys Ctrl with Enter