Hi!
I don't like to share my procedures here as they belong to the company rather than me.
But I'd consider three areas on change:
People
Product (including ingredients, NPD etc.)
Premises (including the fabrication and equipment. I just like to make it 3Ps!)
Then consider how you assess it and agree change before it happens (also that you have the ability to say "no", often lacking in organisations with poor culture.) How you resource and manage the implementation of change (again, often forgotten that food safety risks might be at their highest during change not afterwards and this needs leaders to manage that.) Then how the end state will impact food safety risk and how you do not increase food safety risk in that change.
Hope that's a starting point for you?