That’s what I thought ,but when applied it doesn’t say parking brake it says Handbrake and it doesn’t get a tick along with lights in the log on the WSR route.
Having been around a class 33 and being in the cab during shunt moves, I can assure you that the handbrake is the parking brake and I have used it several times in real life. Are you sure you applied it fully? I does take a while to apply it in reality. There's no other brakes except the ones used when the loco is running (train/drivers brake and loco brake). There's no switch or button to press because the brakes are manual. It may be that there's a bug with the gameplay and it not registering that you have done the said tasks. It has been a while since I did any scenarios or timetable runs on WSR.