Rebracketing should largely work as it does in a physical tournament. You compile team records and then assign them new seeds. I suggest creating a new tab in your existing roster to post the playoff seeds. You’ll want to use the same team names/codes from the prelims so your moderators can easily add the right teams to their rooms.
Rebracketing is a great time to have a lunch break. Pay attention to when the last round finishes so your lunch break isn’t too short. We recommend lunch breaks be no longer than 30 minutes to keep things moving.
Post updates about the new seeds in the #announcements channel.