1. First Create a new composition (incuding setting up preset settings)
2. Now add shape layers (this will hold geometric shapes), open the triangle (below)
2b. It should look like the below after you open triangle
3. Now click on the stop watch for the field you want to manipulate I did ‘position’ for this example.
(this will allow you to ‘key’ frames
4. You can drag around the position (the yellow letters) and the position on the timeline (the yellow triangle with the downward pointing arrow, this will move and tween between the attributes).
5. The results is: