If a trustee determines that an allocation between principal and income required by NRS 164.865, 164.870, 164.875, 164.880 or 164.895 is insubstantial, the trustee may allocate the entire amount to principal unless one of the circumstances described in subsection 3 of NRS 164.795 applies to the allocation. This power may be exercised by a cotrustee in the circumstances described in subsection 4 of NRS 164.795 and may be released for the reasons and in the manner described in subsection 5 of NRS 164.795. An allocation is presumed to be insubstantial if:
NRS 164.860