I would recommend considering the following:
Have a look at Regional Business Partner Network (search them up). It is funded by the New Zealand government. Based on your specific needs, they’ll connect you with the right resources, people, training and even funding to help move your business forward. The first step is to register your business on their website and then talk to a growth advisor.
Work and Income may also be able to help with developing a business plan, training in business skills, advice and project reports. https://www.workandincome.govt.nz/products/a-z-benefits/business-training-and-advice-grant.html