To exercise, to the same extent and subject to the same restrictions, all powers of a Board of Adjustment; but the Class I and the Class III Members shall not participate in the consideration of applications for development which involve relief pursuant to subsection d of Section 57 of P.L. 1975, c. 291, NJ.S.A. 40:55D-70; and no alternate member shall vote in place of a Class I or Class III member not participating in an application under this section.