Controlling the pan and tilt

To control the pan of the camera (this means angling it side to side), loosen the small knob that is shaped like a water droplet close to the rod that holds the thumb controller. This will allow the camera to move side to side. It is a good idea to have this tightened if you are not actively moving the camera. 

To control the tilt of the camera (this means angling it up or down), loosen the large knob on the left side of the apparatus that holds the camera. This will allow the camera to move up and down. Make sure you are holding on to the handle rods so that the camera doesn't fall forward.