Prior to the trial of any action, the court, either on its own motion or the motion of any party, shall, after consulting with the attorneys for the parties and any unrepresented parties, enter a scheduling order that limits the time:
(1) To join other parties and to amend the pleadings;
(2) To file and hear motions;
(3) To complete discovery;
(4) The date or dates for conference before trial, final pretrial conference and trial;
(5) Any other matters appropriate to the circumstances of the case.
A schedule shall not be modified except by leave of the judge upon a showing of good cause.