The directors shall elect from their number a president and one or more vice presidents. They shall also elect a secretary and a treasurer, who need not be directors or members of the association; and they may combine the two latter offices and designate the combined office as secretary-treasurer; or unite both functions and titles in one person. The treasurer may be a bank or any depository, and, as such, shall not be considered an officer, but as a function of the board of directors. In such case, the secretary shall perform the usual accounting duties of the treasurer, except that the funds shall be deposited only as and where authorized by the board of directors.