375.181.  Officers required of companies. — 1.  Every insurance company organized under the laws of Missouri shall have a president and a secretary who shall be chosen by the directors, and such other officers as shall be prescribed by the bylaws of the corporation.  Unless the bylaws otherwise provide, any two or more offices may be held by the same person except the offices of president and secretary.

  2.  All officers of the company, as between themselves and the corporation, shall have such authority and perform such duties in the management of the property and affairs of the corporation as may be provided in the bylaws, or, in the absence of such provision, as may be determined by resolution of the board of directors.