99.2. The arbitrator shall proceed by arbitration with assessors unless, within 15 days of his appointment, there has been agreement to the contrary between the parties.
Each party shall designate, within 15 days of the appointment of the arbitrator, an assessor to assist the arbitrator and represent the party during the hearing of the dispute and the deliberations. Where one of the parties does not designate an assessor within the prescribed time, the arbitrator may proceed in the absence of that party’s assessor.
He may proceed in the absence of an assessor who does not attend after having been duly convened.