The meeting was facilitated by Cauldron and served to illuminate various revelations about the organization.
Contessa was sent out to gather all participants, other people and groups were mentioned as invited and sought out but they did not show up, those who responded were the committed ones.
An agreement is eventually reached
Participants are transported to the battlefield and eventually force the Endbringer to retreat.
The hall saw regular use, roughly coinciding with who is going to be taking point at the next enbringer fight.