Well, I'll try to be as brief as possible though I'm not good at it sometimes. Basically, you set up a target, hopefully with some decent height to it. You pick out a bullseye spot which I put in the very center of the target width-wise and somewhat toward the top. Then you need a visible straight line running all the way down the target from the center of the bull.
Now start shooting at various distances <u> using your uppermost pin the entire time</u>, no others, always aiming it at the bull. Start for example at 10 or 20 yds, shoot a group. Then move to 30 yds, shoot a group and repeat to whatever distance you can hold a group. I went out to 50 yds. What happens is your groups SHOULD theoretically all line up in a vertical pattern (doesn't matter at this point if they're on the line you made on the target). Most likely though the groups will have an angle to them from the uppermost group to bottom-most group either angling down to the left like this / or down to the right like this \. This is because if your centershot is off, it's magnified the further you move rearward in yardage.
Then the arrow rest is moved either away from the riser or toward the riser and you shoot again at the various distances using the same upper pin until you bring all the groups into a straight vertical line. In other words, once you have the rest's left/right orientation nailed perfectly, your groups will become vertical at any distance using the same pin for all. Then you can adjust the windage on your entire sight set as needed to bring them all into the center line you placed on the target which of course is equal to dead center of the bull. I think it's wise to do this step at close range so you can get an accurate windage setting. The beauty of it is that windage setting will now translate to ALL distances.
At this point it's back to business as normal. So all pins are back in play and you just set the desired elevation for each at whatever distance you want them at. 20,30,40, etc. Just like you always do when setting up sights.
You can see why you want a target with some decent height as earlier mentioned. Depending on the speed of the bow, you're going to get some substantial drop using the same uppermost pin by the time you get out to 40 or 50 yds. /forum/images/%%GRAEMLIN_URL%%/grin.gif