These settings are set by the livery. They can't be changed as far as I know. At least that's the case in 2024. In 2020 you can set them however you like. It's simply because in MSFS 2024 you can configure the equiment PER LIVERY.
I did not know about this on the first days of trying out the A350. Discord Community has helped 🙂
Tbh, to this day I still don't even know what this button is used for..