r/RNLI

Does anybody know the full chain of command/rank structure of RNLI?

Sorry if this is a silly question, or asked many times but I am 18 and I want to do something rewarding and that makes a difference in my community, I'd be really interested in volunteering but I am skeptical as to wether they'd be open to me in thst role due to my age, which I would fully understand I just wpuld appreciate some clarification.