In the conduct of actions to which this rule applies, the court may make appropriate orders:(a) Determining the course of proceedings or prescribing measures to prevent undue repetition or complication in the presentation of evidence or argument;(b) requiring, for the protection of the members of the class or otherwise for the fair conduct of the action, that notice be given in such manner as the court may direct to some or all of the members of any step in the action, or of the proposed extent of the judgment, or of the opportunity of members to signify whether they consider the representation fair and adequate, to intervene and present claims or defenses, or otherwise to come into the action;(c) imposing conditions on the representative parties or on intervenors;(d) requiring that the pleadings be amended to eliminate therefrom allegations as to representation of absent persons, and that the action proceed accordingly;(e) providing special rules for the proceeding and the terms to be had by the parties for discovery;(f) dealing with similar procedural matters. The orders may be combined with an order under Rule 34.3, and may be altered or amended as may be desirable from time to

had by the parties for discovery;(f) dealing with similar procedural matters. The orders may be combined with an order under Rule 34.3, and may be altered or amended as may be desirable from time to time.