(a) The board shall elect from among its members a president and vice president.
(b) The board shall appoint a secretary. The secretary may be a director.
(c) The person who performs the duties of auditor for the municipality shall serve as treasurer of the district.
(d) Each officer of the board serves for a term of one year.
(e) A vacancy in a board office shall be filled by the board for the unexpired term.