Did you get this sorted out?
If not, I'm not able to add any pictures right now, but can try to explain. If using the myAI app go to lighting. Where your lighting schedule is you should see dots along the bottom of the schedule that corresponds to each change of your lighting schedule. So for a basic light schedule that turns on, ramps up for one hour, stays on for several hours, and ramps down for one hour until they turn off, you'll see 4 dots. To adjust the length you just need to adjust those dots for what you want it to be.
So if your lights start ramping down at 1800 hours and turn off at 1900 hours and you want that to start ramping down and turn off earlier; you would select the dot at 1800 hours and move it to say 1700 hours. Then select the dot at 1900 hours and slide it to 1800 hours. Your light will now start ramping down and turn off one hour earlier. Then just push the star, select "save preset", name it, and save. Hopefully this makes sense or helps. If not I'll see if I can add photos.
