Like everyone else has said. Depends on how your bow shoots. For me, I set my first pin and it works from 0-20 yards.

I have 3 pins, top 0-20, middle 30 and bottom 40.

If you do not plan on shooting any further than 35 yards, you can set them 15,25,35 or if you shoot a quick bow you might be able to get away with just 2 pins 20 and 35.

You will just have to play with it and descide what works best for you and your set up.