Section 4.6   Administrative Services.
    There shall be, within the administrative service of the City, a Clerk, Treasurer, Assessor, Chief of Police, Superintendent of Public Works, Health Officer, Attorney and such additional administrative officers as may be created by ordinance or resolution. The Council may combine any administrative offices in any manner it deems necessary or advisable for the proper and efficient operation of the City. The City Council shall fix the rate of compensation for all administrative officers of the City within the limits of budget appropriations.
   Except as hereinafter provided, all administrative officers of the City shall be appointed by the Mayor with the approval of the Council, for an indefinite period, and shall serve at the pleasure of the Council.
   If a vacancy occurs in any administrative office and the Mayor fails to make an appointment thereto approved by the Council within sixty days from the date the vacancy occurs, then such vacancy shall be filled by the Council.
   Except as may be otherwise provided by statute or this Charter, the Council shall establish by ordinance or resolution such departments of the City as it deems necessary or advisable and shall prescribe therein the functions of each department and the duties, authorities and responsibilities of the officers of each department.
   The City may by initiatory ordinance, to be approved by a majority vote of the electors of the City, create the office of City Manager. The City Manager shall be responsible to the Council for the efficient administration of all departments of the City government under his jurisdiction.