Mozraver

Hi All, I've just ordered my second Omlet door, but to be honest, I still haven't worked out the light sensor. Standard setting is 6 for the morning light and 26 for the evening. I don't get it. How do I make my coop open earlier in the morning, and close later in the evening? My chooks are getting locked out. Is a 6 in the settings lighter or darker than 26 in the evening? Should I set the mornings to, say, 3, or should it be 9 for earlier opening? And evening, why so much difference? why should that not be set at say 30 to close, or is it 20? Any help appreciated. thanks, Moz