Ind. Code § 25-6.1-2-4

Sec. 4. Per Diem and Expenses. Each member of the commission shall receive a salary per diem for each day actually engaged in service of the commission, together with reimbursement for necessary travel expense incurred in the performance of his strictly official duties, in accordance with travel policies and procedures established by the department of administration and the state budget agency. The compensation and expense of said commission shall be paid out of the general fund of the state upon appropriation being made therefor in the manner provided by law for the making of such appropriations.