New York Consolidated Laws, Civil Practice Law and Rules - CVP § 321. Attorneys

(b) Change or withdrawal of attorney. 1. Unless the party is a person specified in section 1201, an attorney of record may be changed by filing with the clerk a consent to the change signed by the retiring attorney and signed and acknowledged by the party. Notice of such change of attorney shall be given to the attorneys for all parties in the action or, if a party appears without an attorney, to the party.

2. An attorney of record may withdraw or be changed by order of the court in which the action is pending, upon motion on such notice to the client of the withdrawing attorney, to the attorneys of all other parties in the action or, if a party appears without an attorney, to the party, and to any other person, as the court may direct.

(d) Limited scope appearance. 1. An attorney may appear on behalf of a party in a civil action or proceeding for limited purposes. Whenever an attorney appears for limited purposes, a notice of limited scope appearance shall be filed in addition to any self-represented appearance that the party may have already filed with the court. The notice of limited scope appearance shall be signed by the attorney entering the limited scope appearance and shall define the purposes for which the attorney is appearing. Upon such filing, and unless otherwise directed by the court, the attorney shall be entitled to appear for the defined purposes.

2. Unless otherwise directed by the court upon a finding of extraordinary circumstances and for good cause shown, upon completion of the purposes for which the attorney has filed a limited scope appearance, the attorney shall file a notice of completion of limited scope appearance which shall constitute the attorney's withdrawal from the action or proceeding.