(A) The order of business for all meetings shall be as set forth in the agenda, except that the order of business and allocation of time may be altered by an action approved in the meeting. Upon completion of the business described in the agenda, the regular meetings shall proceed in the following order:
(1) Unfinished business
(2) New business
(3) Comments and announcements
(B) A special meeting shall be limited to the purposes stated in its agenda.