In addition to using any State or locally developed identifier, each one-stop delivery system shall include in the identification of products, programs, activities, services, facilities, and related property and materials, a common one-stop delivery system identifier. The identifier shall be developed by the Secretary, in consultation with heads of other appropriate departments and agencies, and representatives of State boards and local boards and of other stakeholders in the one-stop delivery system, not later than the beginning of the second full program year after July 22, 2014. Such common identifier may consist of a logo, phrase, or other identifier that informs users of the one-stop delivery system that such products, programs, activities, services, facilities, property, or materials are being provided through such system. Nothing in this paragraph shall be construed to prohibit one-stop partners, States, or local areas from having additional identifiers.