At the start of the tournament, teams are divided into groups (or divisions) of 3 or 4 teams each. If the tournament has a full roster of 32 teams, then there are 8 divisions of 4 teams each. With fewer teams, some (or all) divisions may have 3 teams, or there may be fewer than 8 divisions.
Within each division, each team plays a match with each other team. So for a division with 4 teams, each plays 3 matches; in a division with 3 teams, each plays 2 matches.
There are 4 rounds in the annual championship. Round 1 has up to 32 teams and 16 teams advance; round 2 has 8 teams advance, round 3 has 4 advance, and the Grand Final determines the championship. To keep the tournament on schedule, each round is limited to 90 days. At the end of the 90 days, the scores in each match are checked, whether the match is complete or not, and the team with the highest number of games won on that date wins the match. If the match score is tied then it is scored as a draw.
Two teams from each division advance to the next round. If there is a tie for 1st/2nd, both teams advance and no tiebreaker is required. But it is possible to have ties for 2nd/3rd, 1st/2nd/3rd, or even have all 4 teams have a win, draw, and loss resulting in a 4-way tie. If there is a tie, the net score differential (total games won - total games lost) is used as the tiebreaker.
Examples will be posted in this forum in a few minutes. I need to enter some data into a spreadsheet and post it in a different browser...