All-wheel on normal brake dynamometer?

Aloahe! I believe the discussion itself has been going on for ages but I haven’t found a clear answer on the subject yet. Can a PermanentAWD be driven to a normal brake test stand where only the front axle is driven and the HA is firmly on the ground ??? Can a Subaru be towed? I have read that there are extra brake test stands for AWD, or that during the ride is measured. My workshop just said: “We’re going to do that with the brakes.” For years… can you enlighten me??? MfG