The beginning of the work in teams is the most difficult phase, but it can be simplified if a few norms are observed:
Define a small set of rules to be observed by all members.
Dedicate the first minutes of each meeting to administrative aspects, schedule, place to meet, conflicts, etc.
Rotate the roles in the meetings: minutes, moderator, reserve the room, etc.
Maintain a unique discussion forum, either through Internet (copy all messages to all team members) or a single conversation in a room (avoid two simultaneous conversations in two subgroups).
Dedicate a brief time in each meeting to propose improvements on the group dynamics.