Use navigraph on Xbox

Hi,

I use MSFS on Xbox; how can I use navigraph on a carenado Cessna 182 RG. I’ve tried to add the GTN750 on the iPad options (from de cockpit) but I can’t achieve. This the correct way for programing navigraph?

If I buy Cessna 414, will be available to use navigraph or will be the same case that the carenado models?