151.Section 35 provides an enabling power for the Scottish Ministers to modify aspects of the definition of “appropriate period” in section 33(5)(a). The power conferred by section 35 enables the Scottish Ministers to adjust either the age when different buffer periods apply or the length of buffer periods or both. The “buffer periods” refer to the number of years added to the length of the sentence for the purposes of determining the appropriate period in section 33(5)(a).