What do you need help with? Just the general idea of how it works? I don't have that exact one but have some that are similar. Usually push the little pins down
For the times when you need the Lights on and leave the pins out(like they came in box) for the hours you want dark. Little three Way click switch is usually on the side. Has three settings, on, off and auto. You want auto. On mine it's the middle setting. To make sure simply plug light into timer and turn time dial. If it shuts off and turns on at the given times you selected, you are good. If it stays on all the time you are probably in on mode and need to adjust on the side usually. Same thing with off etc.. Line up the arrow with the current time you have now with the pushpins and that should be it. I don't know if that's what your looking for?