Sec. 13. (a) The board shall fix the time for holding regular meetings, but it shall meet at least once in the months of January, April, July, and October. The county legislative body may order that regular meetings be held more frequently.
(b) Special meetings of the board may be called by the chair or by two (2) trustees, upon written request to the secretary. At least three (3) days before a special meeting, the secretary shall send to all trustees a written notice fixing the time and place of the meeting. Written notice of a special meeting is not required if:
(1) the time of the special meeting has been fixed in a regular meeting; or
(2) all trustees were present at a meeting at which a special meeting was called.