It shall be the duty of the Chief of Police to detail one policeman to be in attendance at every meeting of Council to act as Sergeant-at-Arms, who shall remain in attendance, subject to the Council’s orders, until granted leave by its presiding officer to retire. Under the direction of the presiding officer of the Council, the Sergeant-at-Arms shall preserve order and decorum, and on the order of the presiding officer shall compel the attendance of absent members when there is not a quorum.