out the purposes of the grants. (5) Availability of funds Amounts allotted under this subsection to a State or to an Indian tribe, tribal organization, or tribal consortium shall remain available for expenditure through the end of the succeeding fiscal year. (6) No matching payment required No matching payment shall apply to the grants made under this section. (e) Reservations of funds (1) Indian tribes, tribal organizations, or tribal consortia The Secretary shall reserve 5 percent of the funds appropriated for a fiscal year to carry out this section for grants to Indian tribes, tribal organizations, or tribal consortia. (2) Technical assistance, evaluations, and guidance The Secretary shall reserve 5 percent of the funds appropriated for a fiscal year to carry out this section to provide technical assistance, evaluations, and guidance to grantees and to carry out, by grant, contract, or interagency agreement, cross-site evaluations for purposes of identifying evidence-based practices criteria that will qualify for payment under section 474(a)(7) (as so in effect). (f) Authorization of appropriations In addition to any amounts otherwise appropriated to carry out this subpart, there are authorized to be appropriated to the Secretary for purposes of making grants under this section, $15,000,000 for each of fiscal years 2019 and 2020, to remain available until expended. (g) Definitions In this section: (1) Indian tribe