A modification made by a prospective modification order—
(a) begins to apply (or to apply again) on the commencement of an epidemic management notice stating that it activates—
(i) the modification; or
(ii) all modifications made by the order; or
(iii) the modifications made by all modification orders; and
(b) ceases to apply on the earliest of—
(i) the expiry of the epidemic management notice that activated the modification:
(ii) the revocation of the epidemic management notice or part of an epidemic management notice that activated the modification:
(iii) the revocation of the order.