Ind. Code § 5-2-1-6

Sec. 6. The board shall meet at least four (4) times in each year and shall hold special meetings when called by the chairperson. The presence of nine (9) members of the board constitutes a quorum for doing business. At least nine (9) affirmative votes are required for the passage of any matter put to a vote of the board. The board shall establish its own procedure and requirements with respect to place and conduct of its meetings.