N.Y. Comp. Codes R. & Regs. tit. 9, § 5002.7 – Payments to single claimant only.

(a) A prize form shall be filed in the name of a single legal entity as claimant, either one individual or one organization. Multiple payees are not permitted, except as may be authorized pursuant to subdivision (d) of this section.
(b) A claim may be entered in the name of an organization only if the organization possesses a Federal employer identification number (FEIN) issued by the Internal Revenue Service and such number is shown on the claim form. Groups, family units, clubs, or organizations without a Federal employer identification number shall designate one individual in whose name the claim is to be filed.
(c) If a claim is erroneously entered with multiple claimants, the claimants shall designate one of them as the individual recipient of the prize, or, if they fail to designate an individual recipient, the commission may designate any one of the claimants as the sole recipient. In either case, the claim shall then be considered as if such claim were originally entered in the name of the designated individual and payment of any prizes won shall be made to that single individual.
(d) Under exceptional circumstances, payment may be made to multiple payees at the discretion of the commission.