TRS is the tool for filing and responding to arbitration cases online. Hearing a Case in Online Filing.This tutorial guides you through the process of navigating an Online Filing case. Arbitration is a form of alternative dispute resolution (ADR) in which a neutral third party (an arbitrator) hears a dispute between two or more parties. Upon receipt of your filing, your case will be assigned to the appropriate regional office and you will be provided with a case number. Fill Out Our VOLUNTEER APPLICATION. This form must be uploaded to your application case record in order for your filing to be approved. 1. Arbitral Forum (or name of arbitrator(s)):. 2. File or Manage Case, International, Find an Arbitrator or Mediator, Education and Resources, Rules and Forms, Support, Discover Information, Connect with Us We'll put you on the right path.