How do I shut off a bathroom radiator with angles valves?

[Gwills]

My bathroom radiator is very hot in a small room and I would like to shut it off but can’t work out how. There are two valves one at each side at the bottom with a small prong sticking out of

each one. I don’t know what the difference is between them or even if that is what I have to turn or how!

 

[ShaunCorbs]

Turn them clockwise eg screw then in