Might want to post this in the Youth Trap Shooting Section......and maybe read some of the posts there.
Is this a paid or volunteer position.
if it is a volunteer position, like most volunteer positions it will be what you decide to make it and my advice is not to let it interfere with your family life/job (from a former Scoutmaster who didn't realize it until after the fact)
What job description did he give you?
One of my clubs had a "youth" director, basically he enjoyed working with kids and was the guy who volunteered for it, he would run monthly saturday event, 22's in the morning for 2-3 hours and then shotgun in the afternoon as a way for members to expose their kids with others in a safe environment. It died out a few years back and no one has bothered to take it over.
the biggest thing I've seen with Scouts and my daughter's high school team is providing guns/ammo for the first time or two, for that initial experience for kids and parents to see guns aren't evil and can be quite enjoyable, I wouldn't hesitate to charge them the going rate but making it available is a big help and hurdle especially for non-shooting parents.