Yes, each player plays against every other player in their group. Round 1 ends on January 9, 2019. The pairings are 3-6, 4-2, and 5-1. So, in your case (player 1, playing against player 5 (gizmo-war222)).
You can also play against all other opponents in advance, but this game
must be played by January 9th.
Okay, I understand.