I've run ranges before for several years. Both archery and bb. I've found several things that work for me... I recruit older scouts 15 and up to work as assistants. I try really hard to keep the ratio at 1 assistant per bow and 1 assistant for every 2 bb rifles at the maximum. I use an adult as RO for each range. I have a training of about 1 hour before camp for my range staff. Each shooter is coached by an assistant for every shot with a bow. All bb rifles are shot from the prone position only (unless physically unable to perform, then allowances are made). Special needs kids are coached by me or my wife almost exclusively. I'm sort of chapped at times by the council event rule but I understand their issues, so I don't complain. Even though I'm military, I never call the bb rifles a WEAPON. Even though they could be used to inflict damage or wounds I call them a "bb rifle". I call my M-16 and my M-9 a "weapon". My personal firearms are "guns". Ranges are easy... just takes a logical approach. NDCLS course went over how to run a range but had NOTHING on how to TEACH shooting in either discipline. Now it looks like I get to teach that module at the next course.
Gotta go,
T&C44