The officers of the board shall consist of a president, a vice president, a secretary and a treasurer. The president and vice president shall be elected by the board and each shall be a director. The secretary and treasurer shall be appointed by the board and may be a director or any other person. The offices of secretary and treasurer may be filled by the same person. All officers shall serve at the pleasure of the board. Each officer shall take, subscribe and file with the secretary an oath of office before assuming any duties. The board shall fix a compensation, if any, to be paid to each officer which compensation shall be paid out of the funds of the district.