(i)the making of applications for maintenance [F1assessments] [F2calculations];

F3[(ii)the making, cancellation or refusal to make maintenance [F4assessments] [F5calculations];

[F6(iii)the making of decisions under Articles 18 or 19;]]

[F7(ii)the making of decisions under Article 13;

(iii)the making of decisions under Article 18 or 19;]

F8[(b)extending the categories of case to which[F6 Schedule 4C] applies;]

[F9(b)extending the categories of case to which Article 18, 19 or 22 applies;]

(c)as to the date on which an application for a [F10maintenance assessment] [F11maintenance calculation] is to be treated as having been made;

(d)for attributing payments made under maintenance [F12assessments] [F13calculations] to the payment of arrears;

(e)for the adjustment, for the purpose of taking account of the retrospective effect of a [F14maintenance assessment] [F15maintenance calculation], of amounts payable under the [F16assessment] [F17calculation];

(f)for the adjustment, for the purpose of taking account of overpayments or under payments of child support maintenance, of amounts payable under a [F18maintenance assessment] [F19maintenance calculation];

(g)as to the evidence which is to be required in connection with such matters as may be prescribed;

(h)as to the circumstances in which any official record or certificate is to be conclusive evidence;

(i)with respect to the giving of notices or other documents;

(j)for the rounding up or down of any amounts calculated, estimated or otherwise arrived at in applying any provision made by or under this Order.

(3) No power to make regulations conferred by any other provision of this Order shall be taken to limit the powers given to the Department by this Article.