Idaho Code § 39-1347
The secretary shall countersign all drafts and warrants on the district treasury, and no payment of district funds shall be made except on draft or warrant countersigned by him. He shall not countersign any such draft or warrant until he has found that payment has been legally authorized; that the money therefor has been duly appropriated and that such appropriation has not been exhausted.
Such warrants shall be drawn by, and countersigned upon the order of the president of the hospital board, or, in his absence, the other member of the board; but no drafts or warrants shall be drawn, except upon the appropriation of the board, nor in excess of the moneys actually in the district treasury; except that warrants may be issued in anticipation of the collection of taxes, but not in excess of seventy-five per cent (75%) of the amount of the levy therefor, nor shall any warrants be issued nor indebtedness incurred in anticipation of such levy.
When a warrant is presented for payment, if there is money in the treasury for the purpose, the treasurer must pay the same and write on the face thereof, "paid", the date of payment and sign his name thereto.
Idaho Code § 39-1347