NR 45.13(17)(b)4.4. Reservations shall be approved subject to the special use zone calendar under par. (c). NR 45.13(17)(b)5.5. Reservations shall be accepted and made on a first-come, first-served basis consistent with the special use zone calendar. NR 45.13(17)(c)(c) Special use zone calendar. The department shall establish and maintain an annual calendar of use for the recreational uses listed par. (d) recognizing the priority of special uses designated in this section for the dates indicated.