This section shall pertain to either the water management commission or the water management board. Meetings may be called by the chairperson or 2 members of either body, upon notice sent by registered mail to each member. The notice shall be mailed not less than 10 days before the time of the meeting. A majority of the members shall constitute a quorum for the transaction of business, but a lesser number may adjourn from time to time. A meeting may be adjourned from time to time. Unless otherwise provided in this act, an action shall not be taken by either body except by a majority vote of the members present and voting. In the event of the adjournment of a hearing, it shall not be necessary to advertise the adjournment of the hearing. Orders issued by either body shall be signed by its chairperson and secretary. The secretary shall prepare and sign duplicate originals of the minutes of the proceedings of the body, one to be retained by the chairperson and the other to be filed with the director of the department of agriculture. The originals of all proceedings and records shall be kept on file with the secretary. The director of the department of agriculture may require the secretary to furnish certified copies of records of either body in the office of the secretary for filing in his or her office, and the certified copies filed shall have the same force and effect as the originals. Meetings shall be open to the public, and records of either body shall be considered public records and available for inspection during regular office hours.