N.Y. Comp. Codes R. & Regs. tit. 6, § 184.4 – Additional criteria for appointments.

(a) The Class II Wildlife Rehabilitator may be assisted by and provide training to one or more assistant wildlife rehabilitators upon approval by the department of an outline of training methods and procedures to assure control over the activities of appointed assistant wildlife rehabilitators, and the Class II Wildlife Rehabilitator shall be responsible for the proper performance of duties of all assistant wildlife rehabilitators under their supervision.
(b) A Class II Wildlife Rehabilitator may nominate an assistant wildlife rehabilitator who was trained by and previously assisted another Class II Wildlife Rehabilitator. In such case it shall be at the discretion of this Class II Wildlife Rehabilitator whether or not to require further training.