This demo is an extension to the Connected Boxes demo which is also found on the site. This demo shows you how to touch and drag to select actors, opposed to the Connected Boxes demo where you tap to select. Additionally, I show you how to deselect actors that have already been selected.
What the videos below and follow along:
Part 1: https://www.youtube.com/watch?v=zNV1QvZs1SM
Part 2: https://www.youtube.com/watch?v=zLpWSTVlxiY