; (5) specify the criteria that the public housing agencies would use to identify opportunity areas under the plan; (6) provide for establishment of priority and preferences for participating families, including a preference for families with young children, as such term is defined by the Secretary, based on regional housing needs and priorities; and (7) comply with any other requirements established by the Secretary. (d) Funding for Mobility-Related Services (1) Use of administrative fees Public housing agencies participating in the demonstration program under this section may use administrative fees under section 8(q) of the United States Housing Act of 1937 ( 42 U.S.C. 1437f(q) ), their administrative fee reserves, and funding from private entities to provide mobility-related services in connection with the demonstration program, including services such as counseling, portability coordination, landlord outreach, security deposits, and administrative activities associated with establishing and operating regional mobility programs. (2) Use of housing assistance funds Public housing agencies participating in the demonstration under this section may use housing assistance payments funds under section 8(o) of the United States Housing Act of 1937 ( 42 U.S.C. 1437f(o) ) for security deposits if necessary to enable families to lease units with vouchers in designated opportunity areas. (e) Waivers