Kit Williams directs preparation and management of the stage.  He is the manager who makes sure that directors of sound, light, and  trucks to carry their equipment, are in the right place at the right time.

And here we learn about computer mice (mouses?) that direct robot lights and robot cameras, all from an invisible trailer behind the action.  The emergence of modern speakers that do not splash sound, but direct it, and the marvelous technology of roll up video screens are described here.