The governing body of any municipality, whenever they shall deem it necessary, by resolution, may provide for the appointment of not more than 5 citizens as delegates to represent the said municipality at any industrial, commercial or civic assembly or convention nonpolitical in character. Said delegates shall receive no compensation but they shall be reimbursed by the municipality for all expenses incurred by them in performing their duties as such delegates.
N.J.S. § 40A:9-164