New York Codes, Rules and Regulations
Title 22 - JUDICIARY
Subtitle A - JUDICIAL ADMINISTRATION
Chapter II - UNIFORM RULES FOR THE NEW YORK STATE TRIAL COURTS
Part 207 - Uniform Rules For The Surrogate's Court
Section 207.28 - Examination of attesting witnesses, accountants and adverse parties or witnesses

(a) All examinations of attesting witnesses, accountants and adverse parties or witnesses should be conducted on reasonable notice to all attorneys, guardians ad litem and parties entitled under SCPA 302(3). Unless the court otherwise directs, all examinations pursuant to SCPA 1404, 2102, 2103, 2104 and 2211 shall be held at the court-house.

(b) Unless the court permits, such examinations shall not be conducted until jurisdiction has been obtained over all necessary parties to the proceeding and, where necessary, guardians ad litem have been appointed and qualified.