or c(1) of section 23 of such Act in order to facilitate the operation of a unified self-sufficiency program for individuals receiving assistance under different provisions of the Act, as determined by the Secretary: Provided further , That owners of a privately owned multifamily property with a section 8 contract may voluntarily make a Family Self-Sufficiency program available to the assisted tenants of such property in accordance with procedures established by the Secretary: Provided further , That such procedures established pursuant to the previous proviso shall permit participating tenants to accrue escrow funds in accordance with section 23(d)(2) and shall allow owners to use funding from residual receipt accounts to hire coordinators for their own Family Self-Sufficiency program. Native american housing block grants (Including transfer of funds) For the Native American Housing Block Grants program, as authorized under title I of the Native American Housing Assistance and Self-Determination Act of 1996 (NAHASDA) ( 25 U.S.C. 4111 et seq.), $655,000,000, to remain available until September 30, 2023: Provided , That, notwithstanding NAHASDA, to determine the amount of the allocation under title I of such Act for each Indian tribe, the Secretary shall apply the formula under section 302 of such Act with the need component based on single-race census data and with the need component based on multi-race census data, and the amount of the allocation for each Indian tribe shall be the greater of the two resulting allocation amounts: Provided further , That of the amounts made available under this heading, $7,000,000 shall be for providing training and technical assistance to Indian housing authorities and tribally designated housing entities, to support the inspection of Indian housing units, contract expertise, and for training and technical assistance related to funding provided under this heading and other headings under this Act for the needs of Native American families and Indian country: Provided further ,