NZG152 will allow the raising of the Upper Limit from 3500ft to 4500ft AMSL, and NZG272 will allow the raising of the Upper Limit from 2500ft to 4500ft AMSL.
Both can be activated during daylight hours, by contacting ATC.
For more information refer to the AHGPC Site Guide for Moirs Hill.
Also more details are in the notification letters from CAA.
NZG152 Moir Hill