IIRC you can download the manual to the infotainment screen if the car is connected to wifi. I didnt bother as I have a paper manual, and a pdf copy on my phone. I have not yet needed to consult either while actually out and about.
Maybe NZ dealers are unaware of the procedure because there isnt an on-line version of the manual specifically for NZ specification cars. They would be reluctant to draw attention to a manual version that may be wrong in some details, or includes functions and gismos you might like, but dont get in NZ. Bad enough if you could have had them on a higher trim, but more so if Honda only fit them in other countries.
But it might still be possible to download a UK version to a NZ car. . It will differ in details but having the basics may help. The online Uk manual itself will tell you how. If it doesnt work on a NZ car you could still have it on your phone.