N.J. Stat. Ann. § 40:48-23

Any municipality which shall join such an organization may, by its governing board, designate the mayor or other chief executive officer of the municipality, or any member of the governing body thereof, to represent it in the organization, and may contribute and contract to contribute such portion of the expenses of the organization and such expenses of attendance upon its meetings by the member delegated to represent it, as the governing body of the municipality may determine.