25. The Régie may call witnesses and require the production of documents at the request of a participant or on its own initiative.
The Régie, where applicable, must issue a subpoena to a participant so requesting who is then responsible for serving the subpoena on the witness at the participant’s own expense.
The subpoena must be served at least 5 clear days before the date of attendance of the witness, unless the Régie issues special directions.