I'm trying to remember exactly how I did mine, let's see I would say you'd want to be wired in on the NO relay contacts, you want cut OUT at setpoint in cooling mode. Dif is how low it goes before cutting out. So I think if you set it for 37F setpoint, with 1 deg differential, it would then come on at 37F and cut off at 36F. Now that's what it is sensing at the probe at the time, so you might see an extra degree or two of drop even after it cuts off from the freezer.
Anti short cycle delay I like set to 10 minutes, but it should be at least 3 minutes to protect your compressor.