Before we do any animation, we will need to create a couple of objects to animate. So, let's create some objects:

1. Click on the Create button, select 3D Object, and then select Cube.
2. On the right-hand side of the Transform component, click on the gear with the down arrow and click on Reset; this will fix any positioning, rotating, or scaling issues:

3. Change the X position of the Cube to -0.5 and the Z position to 4.
4. Change the Scale of the Cube to X: 1, Y: 0.2, and Z: 0.2.
5. Change the name of the object to LeftRect.
6. Now, duplicate LeftRect by selecting it and pressing Ctrl + D.
7. Change its X position to 0.5.
8. Change its name to RightRect.

When you are finished, it should be similar to this:

Okay, now we have a couple of objects to animate. Let's add the animation window to our layout:

1. First, click on the Window main menu option and move down to the Animation option:

2. The animation window will pop up. Click on the Animation tab and move it around until you find a spot that you like. I prefer it to be on my Project/Console panel: