New York Consolidated Laws, Religious Corporations Law - RCO § 58-a. Vacancies among trustees

If any trustee of any such incorporated church declines to act, resigns or dies, or ceases to be a qualified voter at a corporate meeting thereof, his office shall be vacant;  and such vacancy may be filled by the remaining trustees until the next annual corporate meeting of such church;  at which meeting the vacancy shall be filled for the unexpired term.