• How to rotate tower shelters and rocket grippers?

Here is a control panel, it contains 5 buttons. 

The left red 4 buttons controls the tower shelters from top to bottom, the pink button controls the rocket grippers.

Select one of the buttons or select some of them, press ‘G’ key to move, with the position changing, the shelters and grippers rotate to open or close.

• Fire and Smoke baking

Smoke simulation - this is the smoke which emits when the rocket engine is fired on the ground.

Select the domain and press the Bake Data button.

Fire simulation - The flames spewing out from rocket engine, it is plume with some smoke track.

Select the domain and press the Bake Data button.

• Camera changing

Open the scene tab, change the camera which you want to load. And you can create a camera yourself.