There two points at which you will need to use force pull. The first one is when you first walk up to it. Over the ramp that leads into the thing there will be hanging a set of treads. Force pull 'em, jump on and force pull 'em again to make it move up. For some reason while I was on the contraption, I couldn't use mind trick on the guy that was like 10 feet away. Jump onto the level there and mind trick now works fine. Wierd.
The second time you'll need to use force pull is on a trash bin or something like that over in the corner that's blocking the way to the lift to balcony 2. You'll have to turn the lift on first. The switch is on the level of balcony 1 I think. I don't remember.