program (a) In general The Secretary of Housing and Urban Development (in this Act referred to as the Secretary ), in consultation with the working group established pursuant to subsection (b), shall establish a grant program to award competitive grants to eligible entities to build or increase their capacities for the better coordination of health care and homelessness services for people who are experiencing homelessness and significant behavioral health issues, including substance use disorders, and are voluntarily seeking assistance. (b) Working group (1) Establishment The Secretary shall establish an interagency working group to provide advice to the Secretary in carrying out the program under subsection (a). The working group shall include representatives from the Department of Housing and Urban Development, the United States Interagency Council on Homelessness, Department of Health and Human Services, Department of Agriculture, and Bureau of Indian Affairs, to be appointed by the heads of such agencies. (2) Development of assistance tools The working group shall, not later than 12 months after the date of the enactment of this Act, 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 shall circulate such materials to interested entities, particularly those who apply for grants awarded pursuant to this Act. (c) 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 their capacities to coordinate health care and homelessness services. (2) Prohibition None of the proceeds from the grants awarded pursuant to this Act may be used to pay for health care, with the exception of efforts to increase the availability of Naloxone and provide training for its