How a small team decides how it works together: which meetings to hold, which channel carries what, what nobody has to announce, and what to add as the team grows.
Most nonprofit teams never decide this: they accumulate it. A weekly sync gets added and never removed, response expectations form by accident, and the norms live in the heads of whoever has been there longest. It holds up at three people and quietly breaks at six, usually right when new colleagues arrive and have nothing to read.
Each pattern below stands alone. Together they are roughly what a new team member needs in their first week.