I've managed 200 tournaments Fast Round Robin since 23 December 2017. The main principles are 10 participants, 1 round and 1 day for time control to quickly finish the tournament.
Klubber
The Great Viking Warriors
1 294 Medlemmer
Kasparov Chess Club
6 266 Medlemmer
Boris Spassky Chess Club
737 Medlemmer
Team Russia
10 498 Medlemmer
Up The Cherries
455 Medlemmer