The final scene is where you set the configeration to control what shows on the final scene of each workflow.
In this section you choose if you would like a Confirm Design Display page or not. This just means if there is a check box on the final page that users need to click to agree that they are happy with their design. The other option here controls if you want a 2D Preview or not.
This is where you set you camera animation. Read more here.
This is where you can set an animation to play on your step. For example you could have a jar and you could make the lid come off and sit next to it. You could do this by enterting 1 - 10 for example. The loop button makes the animation play on repeat.
See an exmaple here.