N.Y. Comp. Codes R. & Regs. tit. 22 § 202.70.25
Counsel are expected to be ready to proceed either to select a jury or to begin presentation of proof on the scheduled trial date. Once a trial date is set, counsel shall immediately determine the availability of witnesses. If, for any reason, counsel are not prepared to proceed on the scheduled date, the court is to be notified within 10 days of the date on which counsel are given the trial date or, in extraordinary circumstances, as soon as reasonably practicable. Failure of counsel to provide such notification will be deemed a waiver of any application to adjourn the trial because of the unavailability of a witness. Witnesses are to be scheduled so that trials proceed without interruption. Trials shall commence each court day promptly at such times as the court directs. Failure of counsel to attend the trial at the time scheduled without good cause shall constitute a waiver of the right of that attorney and his or her client to participate in the trial for the period of counsel's absence. There shall be no adjournment of a trial except for good cause shown. With respect to trials scheduled more than 60 days in advance, section 125.1(g) of the Rules of the Chief Administrator shall apply and the actual engagement of trial counsel in another matter will not be recognized as an acceptable basis for an adjournment of the trial.
N.Y. Comp. Codes R. & Regs. Tit. 22 § 202.70.25