A majority of the Councilmen elect shall constitute a quorum for the transaction of business. A less number may adjourn from time to time and may compel the attendance of absent members. The Council may punish their members for disorderly conduct, and upon written charges to be entered upon their journal for such conduct, after trial, may expel a member by a vote of two-thirds of all members elected. The Mayor shall have a vote only in case of a tie in the votes of the other members. The Council shall determine their rules of procedure. The sittings of the Council shall be open to the public, except where the interests of the city shall require secrecy. A journal of all their proceedings shall be kept by the City Comptroller under their direction. At any time, at the request of any two members, the ayes and noes on any question may be taken and entered upon the journal. The President of the Council while presiding, or the President Pro Tem, when a Councilman, shall have the right to vote upon all questions coming before the Council. The President Pro Tem may be elected by the Council from their own body, or any other elector of such city may be elected President Pro Tem. When an elector who is not a councilman shall be elected President Pro Tem, he shall not have the right to vote upon any question.