TJT

I am quite computer challenged, and I have read as best I could the documentation on Offsets. I struggle with understanding it. Simple situation, I want to be able put Battery Master on and then the Standby Power to AUTO, when commencing from dark the startup of a flight. I have tried several attempts at the 821C offset string but to no avail. Seems like finger problem to me but not sure where to look. Step by step would help and I would learn the process. I could only find Battery 1, 2 etc.