The two-light setup you can borrow on the day

Most portrait bookings in Studio B use the same two lights, so we keep them rigged and ready (sample).
The key light sits in a 90 cm softbox at 45 degrees to the sitter. A strip box behind and to the side draws a thin line of light along the shoulder.
Ask for the two-light setup on the booking form and it is in place when you arrive. Move it as much as you like.