A majority of the members of Council shall constitute a quorum for the transaction of business at any meeting of the Council, but a number less than a quorum may adjourn the meeting from time to time and compel the attendance of absent members in such manner and under such penalties as may be prescribed by this Charter, ordinance, resolution or by rules of the Council. At any meeting at which a quorum is present, any action may be taken by the affirmative vote of a majority of the members of the Council present, unless a larger number be required by the provisions of this Charter.