Is there a reason I can only pick one groups set of players on Twire?

Am I wrong in thinking both groups are playing in the next few days, or is the other group playing in a week or two and that's why they don't show up on the PGC pick 'em page?

Edit: thanks rocketwikkit

Answer 14:35 in https://youtu.be/7HkHZybUxHA?si=5S6oWGlvlL8Mjkzj