N.Y.C. Admin. Code § 28-103.6: § 28-103.6 Proofs, affidavits and oaths.

Proofs, affidavits and examinations as to any matter arising in connection with the performance of any of the duties of the department may be taken by or before the commissioner, or a deputy commissioner, or such other person as the commissioner may designate; and such commissioner, deputy or other person may administer oaths in connection therewith.