(1) Nothing in this Chapter shall be construed to authorize any licensed Expediter to "practice law," as that term is used in 42 Pa. C.S. § 2524; to engage in the "practice of architecture," as defined at 63 P.S. § 34.3; to engage in the "practice of landscape architecture," as defined at 63 P.S. § 902; or to engage in the "practice of engineering," as defined at 63 P.S. § 149; before the Department or the Review Boards. Pursuant to 42 Pa. C.S. § 2524, only duly licensed attorneys are authorized to practice law before the Department or the Review Boards; pursuant to 63 P.S. § 34.18, only duly licensed architects are authorized to engage in the practice of architecture before the Department or the Review Boards; pursuant to 63 P.S. § 903, only duly licensed landscape architects are authorized to engage in the practice of landscape architecture before the Department or the Review Boards; and pursuant to 63 P.S. § 150, only duly licensed engineers are authorized to engage in the practice of engineering before the Department or the Review Boards.