Hi, I am a NZ trained physiotherapist working in the UK and although I haven't had to go through registration as an overseas trained physio, I am familiar with the NZ competencies.
For 10.5 if you open the Registration competencies pdf from the NZ board website it does have 5 indicators listed for aspects to show autonomous practice. Its not so much about the location in which you've practiced but whether you have been able to make independent decisions on practice (i.e. you have not been prescribed what to do by a medical practitioner). As explained in the application form NZ physio's take direct referrals from patients, so you need to demonstrate that you justify your own actions and respond and communicate appropriately to consumer needs.
For 10.1 NZ laws etc. I would assume the main ones referred to (and that directly affect physiotherapists in NZ) are the NZ Public Health and Disability Act (governs the structure and delivery of healthcare in NZ) and the Health Practitioners Competency assurance act (governs the way you practice and show your on-going compentency - this is certainly the main one). These can be found on the NZ Ministry of Health website. They can be a bit tricky to find, but hopefully the following link works. Acts and Regulations
Good luck with your registration.