In Southwest Airlines group travel, the A group boarding is reserved for passengers who have checked-in for their flight and received an A group boarding pass. Here's how you can increase your chances of getting an A group boarding pass:

1. Check-in online: You can check-in online on the Southwest website or mobile app up to 24 hours before your flight's scheduled departure time. The earlier you check-in, the better your chances of getting an A group boarding pass.

2. Purchase EarlyBird Check-In: For a fee, EarlyBird Check-In automatically checks you in 36 hours before your flight's scheduled departure time, increasing your chances of getting an A group boarding pass.

3. Upgrade to Business Select: Business Select fares automatically come with a guaranteed A1-A15 boarding pass, so you'll be among the first to board the plane.

4. Have elite status: If you have elite status with Southwest's Rapid Rewards program, you may be eligible for priority boarding, which could increase your chances of getting an A group boarding pass.

5. Be at the gate early: If you don't have an A group boarding pass, you can still improve your boarding position by getting to the gate early. Southwest Airlines boards their flights in groups of 30 passengers, so the earlier you arrive, the more likely you are to be in an earlier boarding group.