169B.—(1) The Department by order make provision for any case where—N.I.
(a)an application has been made, a declaration has been issued, or any other thing has been done under or for the purposes of this Schedule in relation to a group of workers, or
(b)anything has been done in consequence of anything so done,
and the person who was the employer of the workers constituting that group at the time the thing was done is no longer the employer of all of the workers constituting that group (whether as a result of a transfer of the whole or part of an undertaking or business or otherwise).
(2) In this paragraph “group” includes two or more groups taken together.