N.J. Admin. Code § 19:12-3.2
The mediator appointed pursuant to this subchapter may be a member of the Commission, an officer or employee of the Commission, a member of the Commission's mediation panel, or any other mediator, all of whom shall be considered officers of the Commission for the purpose of assisting the parties to effect a voluntary settlement. The parties may jointly request the appointment of a particular mediator, but the Director of Conciliation shall have the express reserved authority to appoint a mediator without regard to the parties' joint request if such is deemed to best effectuate the purposes of the act. If an appointed mediator cannot proceed pursuant to the appointment, another mediator shall be appointed. The appointment of a mediator pursuant to this subchapter shall not be reviewable.
N.J. Admin. Code § 19:12-3.2
See: 28 New Jersey Register 2797(a), 28 New Jersey Register 3813(a).