After enabling the bigbrother code, hold [Ctrl] + [Shift] and 
press J to cycle through the different camera modes. These are: 

Mode 1: Controls the "X", "Y", and "Z" axis 
Mode 2: Controls only the "X" and "Y" axis 
Mode 3: Normal 

To control the axis, you can use either the cursor keys, or the Left 
Mouse Button + Mouse Wheel. If you go through all three modes then 
hold [Ctrl] + [Shift] and press J again, you will start back at Mode.