; (B) providing information to public defense systems about grants that are available to them, and providing assistance and guidance to public defense systems that apply for such grants; and (C) other services that the Center determines are appropriate. (3) Locations The Center shall determine the locations of the regional backup service centers, and the geographic region that each center is responsible for serving. (h) Requisites With respect to grants or contracts in connection with the provision of public defense services under this Act, the following shall apply: (1) Professional standards The Center shall ensure the maintenance of the highest quality of service and professional standards, the preservation of attorney-client relationships, and the protection of the integrity of the adversary process from any impairment in furnishing public defense services. (2) Economical and effective delivery of public defense services The Center shall ensure that grants and contracts are made so as to provide the most economical and effective delivery of public defense services to persons in both urban and rural areas. (3) Outside practice of law prohibited The Center shall ensure that attorneys employed full time in public defense services activities supported in major part by the Center refrain from— (A) any compensated outside practice of law; and (B) any uncompensated outside practice of law except as authorized in guidelines promulgate by the Center. (4) Continuation of funding The Center may provide interim funding necessary to maintain current level of activities for any grantee, contractor, or person or entity receiving financial assistance under this Act that files with the Center a timely application for refunding until— (A) the application for refunding has been approved and funds pursuant thereto received