to the sum of the allotments determined for each Indian tribe and tribal organization that is part of the consortium. (4) Payments Payments of grants under this section may be made in advance or by way of reimbursement, and in such installments, as the Secretary may determine, and shall be made on such conditions as the Secretary finds necessary to carry out the purposes of the grants. (5) Availability of funds Amounts allotted under this subsection to a State, an Indian tribe, a tribal organization, a tribal consortium, or a community-based organization for a fiscal year 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 not provided a grant from an allotment under subsection (d)(1) for the fiscal year. (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 emphasizing community-based par­tic­i­pa­to­ry methods that align programs with local knowledge and community values, 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). (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