Beyond Dawlish

Passengers,There are 9 boarding groups of American Airlines under which every traveler flies.The group number on American Airlines is determined by your ticket class, frequent flyer status, credit card membership, and whether you've purchased priority boarding.So, passengers who are  just need to consult the customer support department and get the service that they are looking for. 

For detailed information about what determines group number on american airlines, you can visit American Airlines official website and read the blog by Airlines Group Travel at the mentioned link.