You use the touch pad on the controller to bring up a radial menu where you choose an object (by holding the trigger) to create that object in front of you.
From there, you can move the object with the controller or use hand gestures (which you can somewhat see on the right side of the screen) before placing the object in the world (by releasing the trigger).
Pointing at the object outlines it, you can then pick it up (hold trigger) or delete it (pressing bumper).
- if you choose to pick up the object you can move it, scale it, and delete it, same way as before.