Navigation:
Hold Trackpad button (5) to "move" the world. Rotation does not work yet.
Grab objects near you (lights, cubes, females):
Hold Trigger (7)
Grab distant objects (telekinesis):
Place your finger on Touchpad (3), but don't push a button. You should see a laser pointer.
Point to to an object and then click and hold a button. Now you can move that distant object.
Add new objects to scene:
Click Menu button (1) to display Object's browser. Select object with Trigger (7) and click "Add to scene" button.
Note about "Directional Light" object - it is very performance heavy. It's a global illumination (the Sun) and you should not add more than one "Directional Light" per level.