Lighting diagram for a two-person interview

Cross keys: each person's key is the other's rim, set just far enough behind each eyeline that neither throws a shadow on the other's face. It is the cheapest two-person setup that cuts together, because both singles share the same lighting logic and the wide does not give the trick away. The discipline is in the flags: each key wants to spill onto the opposite background, and the pair of solids is what keeps the two sides feeling like one room instead of two setups.