2019 New York Laws
GOB - General Obligations
Article 5 - Creation, Definition and Enforcement of Contractual Obligations
Title 15 - Statutory Short Form and Other Powers of Attorney for Financial and Estate Planning
5-1503 - Modifications of the Statutory Short Form Power of Attorney and of the Statutory Gifts Rider.

§ 5-1503. Modifications  of the statutory short form power of attorney
  and of the statutory gifts rider. A power of  attorney  which  satisfies
  the  requirements  of  paragraphs (a), (b) and (c) of subdivision one of
  section 5-1501B and section 5-1513 of this title is not  prevented  from
  being  a  "statutory short form power of attorney", and a document which
  satisfies the requirements of  section  5-1514  of  this  title  is  not
  prevented  from being a "statutory gifts rider" as either of these terms
  is used in the sections of this title, by the fact that it also contains
  additional language at the section labeled "modifications" which:
1. Eliminates from the statutory short form power of attorney or  from
  the statutory gifts rider one or more of the powers enumerated in one or
  more  of  the  constructional  sections  of this title with respect to a
  subdivision of the statutory short form power  of  attorney  or  of  the
  statutory gifts rider, affirmatively chosen by the principal; or
2.  Supplements one or more of the powers enumerated in one or more of
  the constructional sections in this title with respect to a  subdivision
  of  the statutory short form power of attorney or of the statutory gifts
  rider, affirmatively chosen by the principal,  by  specifically  listing
  additional powers of the agent; or
3.  Makes some additional provision which is not inconsistent with the
  other provisions of the statutory short form power of attorney or of the
  statutory gifts rider, including a provision revoking one or more powers
  of attorney previously executed by the principal.