Cadence meetings
Recurring weekly, bi-weekly, or monthly
Should be a check-in with your group, an opportunity to talk about what's top of mind, etc
How are we doing? What have we accomplished? Bring up new ideas and decide on next projects
All hands
Do-something meetings
As needed.
Do-something meetings should have a clear question. At the beginning, you may find that your do-something meetings overlap with your standing meetings and that's fine.
Varies. May be the whole group if you're trying to make decisions and talk about mission statement; may be a few individuals on a specific task force.
Events (special speakers, conferences, etc)
Consider including allies