Meetings. All meetings of the Board of Zoning Appeals shall be held at the call of the Chairperson and at such other times as such Board may determine. Such Chairperson, or, in his absence, the Acting Chairperson, may administer oaths and compel the attendance of witnesses. The Clerk and Counsel to the Board are hereby also authorized to administer oaths. All meetings of such Board shall be open to the public to the extent provided in Article 7 of the Public Officers Law of the State of New York. Such Board shall keep minutes of its proceedings, showing the vote of each member upon every question, or if absent or failing to vote, indicating such fact, and shall also keep records of its examinations and other official actions. A quorum shall consist of three members.