PROCEDURE – CIVIL PROCEEDINGS IN STATE AND TERRITORY COURTS – SEPARATE DECISION OR DETERMINATION OF QUESTIONS AND CONSOLIDATION OF PROCEEDINGS – SEPARATE DECISION OR DETERMINATION – GENERALLY – where the plaintiff and defendants are in dispute about amounts paid by the plaintiff to the first defendant pursuant to a contract for the engineering, procurement and construction of certain facilities – where the dispute is complex and the quantum of the plaintiff’s claims is in excess of $1.4 billion – where it is estimated that a trial of the claims would take between six and nine months – where the plaintiff has applied for an order that the questions “raised on the pleadings as amended from time to time” be referred to three referees to conduct an inquiry into, and prepare a report to the Court on, those questions – where the defendants oppose the making of such an order, primarily on the bases that r 501 of the UCPR does not allow the Court to “refer out the whole proceeding” and that making a referral would not, in any event, be an appropriate exercise of the Court’s discretion – whether r 501 allows the Court to refer all of the questions in a proceeding to a referee or referees – whether referring all or some of the questions in this proceeding to three referees would facilitate the just and expeditious resolution of the real issues in the proceeding at a minimum of expense