When contested cases involving a common question of law or fact or multiple proceedings involving the same or related parties are pending, the Director of the Office of Administrative Hearings may order a joint hearing of any matters at issue in the cases, order the cases consolidated, or make other orders to reduce costs or delay in the proceedings. (1973, c. 1331, s. 1; 1985, c. 746, s. 1; 1985, (Reg. Sess., 1986), c. 1022, s. 1(1), 1(14).)