(A) Once a motion has been introduced and seconded, the Mayor shall open the floor to debate upon it.
(B) The Mayor shall preside over the debate according to the following general principles:
(1) The introducer (the member who makes the motion) is entitled to speak first;
(2) A member who has not spoken on the issue shall be recognized before someone who has already spoken; and
(3) To the extent possible, the debate shall alternate between proponents and opponents of the measure.