The question is more... ok, target a specific location where? Does it actually know where the different food items are on the tray, where is their center and where is their surface, and how each should be cooked separately?
Perhaps it is effectively radar that cooks stuff, and which can thus theoretically beamform and read directional reflections to detect where the food is.
Because it is mostly-enclosed, it can theoretically additionally detect how much energy isn't going back into the closed loop, and thus went into the food.
Marketing material always makes it extra fancy but it's quite possible that the actual manual says that you must make sure that what you want to heat is at the centre because that's where the energy will be focused.
Also possible, though I got the impression that it was actually directing energy to specific places. And I was already fantasizing about microwave oven with CT-scanner :)
