N.Y. Comp. Codes R. & Regs. tit. 12, § 186-4.1
(a) Employer certificate of eligibility.
Except as otherwise provided in this section, no person or entity may employ one or more child performers unless the person or entity possesses an employer certificate of eligibility to employ child performers issued by the commissioner.
(b) Employer certificate of group eligibility.
An employer may employ a group of children not as individuals, but as a group, to establish a background scene or to perform as a group by obtaining an employer certificate of group eligibility. Such employer certificate of group eligibility shall permit the listed child performers to work for no more than two days, which need not be consecutive, during specified dates of use and shall be subject to the following conditions: