(a) Upon the motion of any party, or upon its own motion, the court shall direct the attorneys for the parties to appear before it for a conference to consider:

(1) The simplification of the issues;

(2) The necessity or desirability of amendments to the pleadings;

(3) The possibility of obtaining admissions of fact and of documents which will avoid unnecessary proof;

(4) The limitation of the number of expert witnesses; and

(5) Such other matters as may aid in the disposition of the action.

(b) The court shall make an order which recites the action taken at the conference and the agreements made by the parties as to any of the matters considered and which limits the issues for trial to those not disposed of by admissions or agreements of counsel. The order, when entered, controls the subsequent course of the action unless modified at the trial to prevent manifest injustice. The court, in its discretion, may establish by rule a pretrial calendar on which actions may be placed for consideration as provided in subsection (a) of this Code section and may either confine the calendar to jury actions or to nonjury actions or extend it to all actions.