; or (ii) established population specific organizations that have demonstrated experience and expertise in providing population-specific services in the relevant underserved communities programs; and (B) entities that incorporate best practices or build on successful models in their action plan, including the use of community advocates. (3) Duration The period during which payments may be made under a grant under paragraph (1) shall not exceed 4 years, except where the Secretary determines that extraordinary circumstances exist. (g) Supplement, not supplant Funds provided under this section shall be used to supplement and not supplant other Federal, State, and local public funds expended to provide services and activities that promote the purposes of this title. (h) Technical assistance, evaluation, and monitoring (1) In general Of the funds appropriated under this section for each fiscal year— (A) up to 5 percent may be used by the Secretary for evaluation, monitoring, and other administrative costs under this section