I just led an Open Space with 13 Board members of an organization. One day in Open Space created the conditions for them to choose to actively govern the organization. I have also led such events from 3hrs to 2 days with senior teams of 6-12. The dynamics are different sometimes. In one situation, stayed together for much of the conversation, but just shifted leadership according to who had a passion for the topic. Others have split into smaller groups after the initial together session. Some have gone to smaller groups right from the start. It depends on where the team or group is in its own journey.
Larry .
