The majority of the members of the board shall constitute a quorum for the transaction of its business. For purposes of this section, temporary members shall not be counted for purposes of a quorum, and shall not vote on board matters other than upon specific cases to which they are assigned by the chairman. A single member of the board may decide the following types of cases:
In any such appeal, upon request and upon the filing of such written consent the appeal shall be advanced for speedy hearing.
Such decision shall be signed by the single member of the board who presided at the hearing, and such case shall be attributed to said single member for tracking and evaluation purposes.
Mass. Gen. Laws ch. 58A, § 1A