The wonderful ladies here on TE gave me this contact--Bicycle Ride Directors Assoc. of America. brdaa.org or .com They have info there that could be of interest to you.
Other than that, you just have to jump in there and set up routes, get the word out--brochures and internet, get volunteers, assign duties, set up SAG stops and SAG vehicles. It's a committment, but it's fun. See my post on Don't Miss This Ride under charity rides....