There shall be a Finance Director who shall be an officer of the City appointed by the City Administrator for an indefinite term, and who shall be head of the Department of Finance. Except as Council by ordinance provides otherwise, the Finance Director shall collect or receive revenue and other money for the City, shall deposit the same with the City Treasurer or for the City Treasurer in an account or accounts maintained by the City Treasurer in a depository or depositories, and shall maintain a general accounting system for the city government. The Finance Director shall have such other powers, duties and functions as may be prescribed by the Charter, by applicable law, or by ordinance.