She said the authorisation was something that was not taken lightly, but “when required, it should be practical in its application”.

If authorisation was granted under the new regime, it would be informed by operational and legal advice from NZDF, Collins said.

This would have been helpful about 80 years ago.

https://www.historyofwar.org/articles/battles_guadalcanal.html

Operation Watchtower: The Battle for Guadalcanal (August 1942-February 1943)

For Vandegrift, the news was far from welcome as he had not expected to go into action until sometime early in the new year and his division was spread out between Wellington and the United States, with part of it on garrison duty in Samoa. In just under a month he would have to make operational and logistical plans, unload his ships and reload them for combat, sail to the Fiji Islands to conduct a rehearsal and then sail to the Solomon Islands. Reconfiguring the division’s supplies would have to be done in New Zealand’s Aotoa Quay, a confined area that could only take five ships at a time. To make matters worse, the dock workers went on strike so that the Marines had to do the work themselves and the rains came which were driven by a cold persistent wind.

Was really not a good time for New Zealand to have its logistics shut down. That also wound up causing some of the Marines’ supplies to be ruined, which didn’t help the later supply-constrained situation on Guadalcanal.