ok if i change arrows sight in at 20 yards is there a set amont i can move to before shooting 30 and 40 so i wont be shooting into the woods or something

i know ii will need to move them but say it is sighted at 20 is the a set distance i start with for 30 and 40

when i bought the bow the ******* ate the place i bought it told be right was ready to go after shooting 20 yards i just having bought it did not know
and since i have never whiched a thing i have never had the need to re sight it untill i found out my 30 and 40 was not sighted and where still touching one another
and i am need to whic arrows from what everyone says now i am worrying about my 200 arrow messing up my 500 dollar bow set up