The appointive officers of the city shall be the City Manager, Clerk, Treasurer, Assessor, City Attorney, Health Officer, Chief of Police, and Fire Chief. The Council may, by resolution, upon the recommendation of the City Manager, create such additional administrative officers, or combine any administrative offices in any manner not inconsistent with state law, and prescribe the duties thereof as it may deem necessary for the proper operation of the city government. No creation of any administrative office, or combination thereof one with another, shall abolish the office of City Manager nor diminish any of the duties or responsibilities of that office set forth in this charter.