Family Court Forms:
https://www.justice.govt.nz/about/form-finder/?Filter_Topic=82
Criminal Court Forms:
https://www.justice.govt.nz/about/form-finder/?Filter_Topic=80&Filter_Topic_child=94
These forms are provided through, and by, the Ministry of Justice New Zealand.
However, it is recommended you consult with a lawyer before using these general court forms and filing self-represented.