Modify your Taranis X9D or X9D Plus with this 6 position mode switch. The 6 position switch can be installed in place of your S1 or S2 pots at the top of your Taranis radio. The result will be a 6 position rotary switch that can be used for flight modes, flap positions, or whatever you can think of. Users asked for this feature, and FrSky listened! This will require basic soldering skill to install.

Especially on Taranis X9D Plus, you also able to add this component to be S3 pots.  This video https://www.youtube.com/watch?v=Ts0EzeJsoNc will show detail how to do it.