18In any case where—
(a)the Secretary of State requests the Department of Health and Social Services for Northern Ireland to make provision with respect to any charitable property held for the purposes of a unit of a reserve force which has been or is to be disbanded; or
(b)an order is made under paragraph 16 or 17 excluding any charitable property so held from the operation of paragraph 15(1),
the Department may, notwithstanding anything in subsection (1) of section 13 of the [1964 c. 33 (N.I.).] Charities Act (Northern Ireland) 1964 and irrespective of the value of the property in question, exercise its jurisdiction under that section with respect to the property to which the request or order relates.