touch the camera opener with your mouse, and then move it to where it is not touching the monitor opener, do this for opening and closing the monitor. As for changing the cameras, just click the camera you would like to switch too. the Left door use a to light it up and z too close it, Right door use d to light up and c to close it, use x to unclose the doors
THE HOLE GAME IS GLITCHY AND I THINK IMPOSSIBLE BUT GOODLUCK!