5. Upon receiving from the Board the relevant documents in accordance with rules 2(1), 3(4) and (5) the Secretary shall as soon as practicable—
(a)enter particulars of the appeal in the Register;
(b)give notice to the appellant and to the Board of the case number of the appeal entered in the Register (which shall thereafter constitute the title of the appeal) and of the address to which notices and other communications to the Secretary shall be sent;
(c)give notice to the appellant of the Board’s address for service under these Rules where that address is different from the address specified in the assessment notice; and
(d)send to the appellant a copy of any representations in writing by the Board under rule 2(1)(d) or 3(4)(c).