The Council shall appoint, from outside its membership, a competent person who shall have the title of Clerk of Council, shall give notice of its meetings, shall keep the journal of its proceedings, shall authenticate by signature and record in full in a book kept for the purpose of all ordinances and resolutions and shall perform such other duties as shall be required by this Charter or by ordinance. The office of Clerk of Council may be combined with that of any administrative office except that of City Manager.