“(1) This regulation applies where the administrator, after setting a bar date under regulation 12A, thinks it is appropriate, in order to achieve Objective 1, to close the client money pool and treat any further claim for the return of client money as an unsecured claim. (2) The administrator may by a hard bar date notice set a hard bar date. (3) The administrator may not set a hard bar date without the approval of the court given on application by the administrator.”