Pretty simple, just like sierra said. I use the tape that comes with my HHA and mark the yardages with a pencil. I have to use a pencil because I'm always changing bows or something on them.

I don't know why you would think about using glow-paint or something like it unless you think you have to adjust them when hunting. For what it's worth most of us who hunt whitetails from a tree stand or similar short range positions don't adjust them for hunting unless for a special shot. Just set it for 25 yards and shoot anything from 5 yards to 30 yards with a mid body hold.