Moving the object
Moving the object happens by dragging the model with one trigger button pressed down.
Scaling the object
You can scale the object by pressing the trigger button down from both controllers and moving your hands closer or further away from each other. Notice: The center of the scaling is between the controllers, so if the model is far away from the controllers and large, you might not see visible changes. Try bringing the model closer to you.
Rotating the object
You can rotate the object by pressing both trigger buttons down and rotating the object like you would rotate an object in real life with your hands. Currently the rotation is locked so that rotation works only horizontally.