Rule 19 - Substitution or withdrawal of trial counselThe substitution or withdrawal of trial counsel shall be permitted only:
(1) Upon filing with the court, with service on all other parties, a notice of substitution of trial counsel signed by withdrawing trial counsel, the client and substitute trial counsel. The client's signature is not required if trial counsel is a member of the same law office as substitute trial counsel and if it is affirmatively stated that the substitution is made with the client's knowledge and consent, or(2) Upon written application served upon the client, showing good cause for substitution or withdrawal of trial counsel. Unless otherwise ordered, trial counsel shall not be permitted to withdraw from an action at any time later than twenty days in advance of trial or the setting of a hearing on any motion for judgment or dismissal. Substitution of trial counsel shall not in and of itself be sufficient cause for the granting of a postponement of any trial or hearing.