The board shall elect from its membership a chairman and such other officers as it deems necessary. Officers shall serve terms of 1 year and until their successors shall have been elected and qualified. The board shall also appoint a president, a secretary, a treasurer and other such officers as it deems necessary. Before permitting the treasurer to enter upon the duties of his office, the board shall require him to file his bond to the people of this state with such sureties and in such sum not less than the amount of money likely to be in his possession as the board may designate. No officer shall have the power to incur obligations or to dispose of the board’s property or funds, except in pursuance of a vote of the board.