The Match Lobby
As a participant, you have access to the Match Lobby for all your matches, in all of your tournaments!
The Lobby features different designs related to who is talking
You can access it from a match page, via the "Chat" item in the match navigation in the tournament:
This feature exists to ease up the communication between participants in a tournament, to exchange information on how to answer the vital "Where?", "When?" and "How?" questions about their match. Click on any message to display the date and time when it was sent.