In part to address Michael Rodrigues' questions about the purpose
and operation of an ACBL Unit ...
While nearly every unit has its own traditions and business, at its
most basic level an ACBL Unit is formally described in a document
called the "Codification" (which used to be the ACBL Handbook).
It's worth skimming, and at least knowing it's there. It's the first
place I look when I have a question about ACBL business procedure.