After the pig pen, you'll enter a building with a strange helmet on a pedestal. Interact with the helmet to put it on. This activates your first mind-control ability. You'll see several dormant bodies in the background. Use the left analog stick or A/D keys to control these bodies. You'll need to guide them to specific pressure plates or levers to open doors or create pathways for the boy. Remember, you can only control one group of bodies at a time.
