N.J. Stat. § 40:69A-60.1
The mayor of any municipality having a population of more than 300,000, which, prior to January 9, 1982, had adopted the form of government designated as "Mayor-Council Plan C" provided for in article 5 of the act of which this act is a supplement, may appoint one or two deputy mayors, a personal secretary, an executive secretary, and aides, not exceeding 10 in number, who shall serve and be removable at the pleasure of the mayor, and who shall serve in the unclassified service of the civil service of the city and shall receive such salary as shall be fixed by ordinance.
No municipality shall adopt the provisions of this section on or after the date occurring six months after the effective date of this amendatory act.
The mayor of any municipality having a population of more than 80,000, but less than 300,000, which, prior to January 9, 1982, had adopted the form of government designated as "Mayor-Council Plan C" provided for in article 5 of P.L. 1950, c.210 (C.40:69A-55 et seq.), may appoint one or two deputy mayors, a personal secretary, an executive secretary, and aides not exceeding seven in number, who shall serve and be removable at the pleasure of the mayor, and who shall serve in the unclassified service of the civil service of the municipality and shall receive such salary as shall be fixed by the mayor.
N.J.S. § 40:69A-60.1