Indiana Code Title 36. Local Government § 36-9-3-8

Sec. 8. (a) The board shall fix the time and place for holding regular meetings, and it must meet at least once during each calendar quarter of each calendar year.

(b) Special meetings of the board may be called by the chair or by five (5) members of the board upon written request to the secretary. The secretary must send to all members, at least forty-eight (48) hours in advance of a special meeting, a written notice fixing the time and place of the meeting. Written notice of a special meeting is not required if the time of the special meeting has been fixed in a regular meeting.