I’m currently building a 650 size aerial photography quad with a Pixhawk controller & discovered via a Painless360 video on YouTube that a common approach to switching between the multiple (more than 3) flight modes common to a Pixhawk AP setup is to install a 6 position switch into a Taranis using the spare port S3. This has the benefit that you don’t need to combine two of the normal switches on the Taranis, which just sounds confusing to me.