I appreciate the questions. Maybe some additional clarification from my end would be helpful.
In essence, this section is really around regulation-making to define what a protection zone is and bringing all provinces and all first nations together as part of that process.
On clause 6, the “Jurisdiction” section, it is really up to individual first nations whether they want to exercise that jurisdiction or not. Part of the Government of Canada's intent here is to allow for traditional governance systems in how first nations exercise their jurisdiction. That is why paragraph 6(1)(b) is worded as an agreed-upon approach. It's to leave space for traditional governance and preferred governance systems of first nations, as long as they're agreeable to all implicated parties.
In that case, it's not necessarily all provinces. If the first nation is located in only one province and has a protection zone in only one province, it would be only that province.