Ind. Code § 25-28.5-1-9

Sec. 9. The secretary shall call all meetings of the commission as directed by the chairman or upon request in writing by two (2) members, and at such time and places, within the state of Indiana as the commission business may require. Sufficient notice shall be given to permit members to attend all meetings. The presence of four (4) members of the commission in attendance at a commission meeting subject to notice as herein required, shall constitute a quorum for the transaction of commission business. Meetings of the commission may be held pursuant to written waiver of notice signed by all the members of the commission. A record shall be kept of all proceedings at meetings and of the vote taken on each act or transaction of the commission and a majority vote of all members shall be required to bind the commission.