Starting a Type 1 support group, need advice

Hello everyone, I am thinking about starting my own support group for strictly Type 1 diabetics. But I have no experience or knowledge on how to run one, does anyone else have any previous experiences with support groups or how to get people to come to them, or even find stats on how many type 1 diabetics live in my area? Also, does anyone know good ways to make people comfortable enough to come to these groups? I do want to be registered under JDRF so I can use their information and sources for the support group. Thank you all, any help is appreciated.