It's simply in the act. There are some rules stipulating that if you're going to enhance the CPP, it has to be on a fully funded basis. On the process aspect, there would naturally be changes to legislation, as the minister highlighted. Upon royal assent to that legislation, you'd need seven out of 10 provinces, representing two-thirds of the population, to come forward with their orders in council. The final step is the federal order in council.
On September 19th, 2016. See this statement in context.