I can understand why you'd want to disable stop/start. It's puts a lot of wear and tear on the starter/ring and it's not a proper stop/start to begin with which would use a machine bolted directly onto the crankshaft. This is still mostly under development.
Can you disable it? Well, your dealer could if Ford would allow them to change the software which I very much doubt as the official emissions would include stop/start.
Secondly,even if your dealer could disable stop/start, I very much doubt they'd do it because the vehicle would not be toFord spec.
Guess like me, you just have to switch it off every time.