In New Zealand a Security Guard can be called by a few terms:
The route to becoming a Security Guard (Private Security Personnel) in New Zealand is similar to a lot of other places: you need to meet basic requirements such as age, language proficiency, and other usual security licensing requirements of this nature.
Furthermore, you will have to complete a New Zealand government approved security licensing course.
In New Zealand, the government body that controls a NZ Security Guard's license is the Ministry of Justice Private Security Personnel Licensing Authority.
NZ security course information is available on their website
Once you submit the proof of your ability to meet the requirements to the NZ licensing authority, you will get your New Zealand Security Guard license.