You must provide whatever the minimum requirement is that Immigration will accept. To find this out you need to research the INZ website, maybe even research Immigrations Operations Manual or failing that give them a call and ask.
You can of course just use the document, however you risk them not accepting it and it delaying your process.
EOI submitted Jan 2010. ITA Jan 2010. ITA submitted Apr 2010. RV approved June 2011. Passports stickered and returned Aug 2011. Secured job Dec 2011. Arrived Mar 2012. PRV Mar 2014..........Citizenship applications submitted June 2020!!!