Article 60 Representation of parties
If a party who was previously unrepresented appoints a representative or, having been represented, appoints a replacement representative, that party must, as soon as reasonably practicable following the appointment, notify the adjudicator and the other parties in writing—
of the fact that he has appointed a representative or replacement representative;
the name and contact details of the representative or replacement representative;
whether the representative or replacement representative has been authorised by the party to accept service of documents; and
if the representative or replacement representative has been authorised to accept service, the address for service.
If a party who was previously represented ceases to be represented, that party must, as soon as reasonably practicable following the ending of his representation, notify the adjudicator and the other parties in writing—
of the fact that he is no longer represented; and
where the party’s address for service had previously been the address of the representative, the party’s new address for service.