The settlor of any trust affected by this chapter may, by provision in the instrument creating the trust if the trust was created by a writing, or by oral statement to the trustee at the time of the creation of the trust if the trust was created orally, or by an amendment of the trust if the settlor reserved the power to amend the trust, relieve his trustee from any or all of the duties which would otherwise be placed upon him by this chapter, or add duties to those imposed by this chapter on his trustee with regard to inventories and accountings. But no expression of intent by any settlor shall affect the jurisdiction of the courts of the Virgin Islands over inventories and accounts of trustees, in so far as such jurisdiction does not depend upon the provisions of this chapter.