1. Drag a rectangle with a shape, and then copy two. One left and one right, two bullets.
2. Animation right: exit-cascade, direction: left, start: when clicked, the speed is medium.
3. The picture on the left side of the animation: Enter-Stretch, Direction: From the right, Start: Before, Speed: Medium, and "Delay for 2 seconds" in timing.
4. Drag the third picture to the bottom of the picture on the right and stack it at the bottom.