251.270.  Regional commission officers — meetings — records. — Each regional planning commission shall elect its own chairman and executive committee and shall establish its own rules of procedure, and may create and fill such other offices as it may determine necessary.  The commission may authorize the executive committee to act for it on all matters pursuant to rules adopted by it.  The commission shall meet at least once each year.  It shall keep a record of its resolutions, transactions, findings, and determinations, which shall be a public record.