(a) A board shall hold its initial meeting not later than the 60th day after the date the board is created.
(b) Except as provided by Subsection (c), a board shall meet:
(1) at least once a month; and
(2) at other times at the call of the presiding officer.
(c) A board in a county with a population of less than 150,000 shall meet:
(1) at least four times each year during the months of January, April, July, and October at the call of the presiding officer; and
(2) at other times at the call of the presiding officer.