; and (2) who are voluntarily seeking assistance. (c) Working group (1) Establishment The Secretary shall establish an interagency working group to provide advice to the Secretary in carrying out the program established under subsection (b). (2) Composition The working group established under paragraph (1) shall include representatives from the Department of Housing and Urban Development, the United States Interagency Council on Homelessness, the Department of Health and Human Services, the Department of Agriculture, and Bureau of Indian Affairs, to be appointed by the heads of such agencies. (3) Development of assistance tools Not later than 1 year after the date of enactment of this Act, the working group established under paragraph (1) shall— (A) develop training, tools, and other technical assistance materials that simplify homelessness services for providers of health care and simplify health care services for providers of homelessness services by identifying the basic elements the health and homelessness sectors need to understand about the other; and (B) circulate the materials described in subparagraph (A) to interested entities, particularly eligible entities that apply for grants awarded pursuant to this section. (d) Capacity-Building grants (1) In general The Secretary shall award 5-year grants to eligible entities, which shall be used only to build or increase capacities to coordinate health care and homelessness services. (2) Prohibition None of the proceeds from the grants awarded pursuant to this subsection may be used to pay for— (A) health care, with the exception of efforts to increase the availability of Naloxone and provide training for the administration of Naloxone; or (B) rent. (3) Amount The amount awarded to an eligible entity under a grant under this subsection shall not exceed $500,000. (4) Eligibility To be eligible to receive a grant under this subsection, an entity shall— (A) be— (i) a governmental entity at the county, city, regional, or locality level