Players create a Friend Match room themselves, as in the group stage: the player in the upper slot creates it and posts the ID; afterwards either player reports the score (ideally with a screenshot) (with the penalty score after a draw) and the other confirms.
With 8 players left, the organizers create one Custom Tournament room for the remaining matches up to the final, and post its ID about an hour before kick-off. Join 10 minutes early so the organizer can set up the bracket.
Rounds with more than 8 players: players create a Friend Match room themselves (the upper-slot player creates it); afterwards either player reports the score (ideally with a screenshot) (penalties after a draw) and the other confirms within 3 minutes (10 without a screenshot).
From the quarter-finals: the organizers create a Custom Tournament room; be in it 10 minutes before kick-off so the bracket can start on time.