N.Y. Comp. Codes R. & Regs. tit. 18, § 366.4
(c) The following eligibility prerequisites must be met for a family to receive CAP:
(2) the custodial parent must possess a support order for each child enrolling in CAP, and the parent named in the order must be absent from the home, except where failure to obtain a support order is due to one of the following:
(d) CAP filing unit provisions apply to eligible children described at section 369.2(c) of this Title. When a custodial parent(s) of an eligible child transfers to CAP, the CAP application must also include the following individuals residing in the home:
(3) the eligible child's blood-related and adopted siblings who are also eligible children and their parent(s).
Together these individuals comprise a filing unit. If any of the individuals required to be in the filing unit fails to apply or comply with any of CAP’s eligibility requirements, the entire filing unit is ineligible to participate in CAP. Income of any member of the CAP filing unit must be combined and applied when determining the eligibility of the CAP filing unit. Some household members drawn into the CAP filing unit may not meet the CAP eligibility prerequisites because of ineligibility for public assistance or lack of a support order. These individuals are still considered filing unit members even though they cannot receive CAP.
This section outlines the requirements for the CAP program regulations contained in this Part.