I have an HHA on one of my bows, got it right about 3yrs ago.
Setting them up is mega simple. I turn the sight all the way as low as the trigger will go (sight as high as it goes = shortest range). Then I shoot at 10yrds and move the sight, not the trigger, to get it on target. Then I start moving back - for my bow, there's no real difference between 10-25yrds, so my first mark is everything inside 25yrds. I back up 5yrds, shoot a few pins, adjust the sight, get it on target, make another mark. Back up 5 more yards, repeat, repeat, repeat until you reach your desired max range. Don't wanna go to 60yrds, don't walk all the way back.