Google Workspace (suite) includes Google Chat (online & app) that lets everyone interact.
Can have multiple different chats — groups, individual.
So could have group chats such as:
Prop crew chat
Set crew chat
House crew chat
Actors chat….
Boosters chat
Big advantage of Google chat: can easily attach and share documents, spreadsheets etc. in the chat.
And you can also leverage the power of Shared drives to create a drive that all can see and do granular control of who can do what by the sharing settings on the drive and each folder in the drive, including preventing access to see inside some folders, only view others, and edit in still others.
Douglas D Fox