OK, here's how to play:
The projected content (A) features multi-touch interactivity, just like your smartphone. Generally, you should hover just above the content to move it, tap to select it, and pull your hand sharply away to deselect. A small indicator circle will appear as a cursor when your hand is close enough to make a selection, and will disappear upon deselection. Try moving these palettes around and opening and closing them to get a feel for it. Meanwhile, the table device (B) features an augmented reality software that reveals extra content in the projection (A) and models [C]. Try pointing at the logo (D) and see what happens!