THE ROLE OF LOCAL COORDINATORS IN THE D&D ADVENTURERS LEAGUE

Here is a good article on the role of a LC in the AL.

The basic break down is 

1. Social Media
2. Store Support
3. Convention Support
4. Supporting players, DMs, Organizers, & Store Owners
5. Playing & DMing

and then there is a separate section on LC's not being the police and do not make the rules, which I really appreciate.