N.Y. Gen. Mun. Law § 120-d

§ 120-d. Officers of meeting. In order to facilitate business\nprocedure, the local authorities of the several municipalities or\ndistricts meeting jointly for the purposes herein provided shall, at a\nmeeting at which all the municipalities and districts intending to act\njointly are represented, choose from among their number a chairman, who\nshall act as such until his successor is chosen in a similar manner.\nSuch meeting, when organized, shall elect a secretary who may or may not\nbe a member of one of the local boards meeting jointly.\n