GSA delegates authority to the Secretary of the Interior, the Secretary of Health and Human Services, and the Secretary of Education to transfer and to retransfer to each other, upon request, any of the property of each agency that is being used and will continue to be used in the administration of any functions relating to the Native Americans. The term property, as used in this delegation, includes real property and such personal property as the Secretary making the transfer or re-transfer determines to be related personal property. The Departments must exercise the authority conferred in this section following applicable GSA regulations issued pursuant to the provisions of Chapter 5 of Subtitle I of Title 40 of the United States Code.