78. Any application for a postponement of, or a different venue for, an initial hearing must be made in writing, with reasons, to the arbitrator via the ACAS Arbitration Section within 14 days of the date of the letter notifying the hearing arrangements or, where this is not practicable, as soon as is reasonably practicable. Such applications will be determined by the arbitrator without an oral hearing after all parties have received a copy of the application and been given a reasonable opportunity to respond.