I use the Shuttle with my Thetis software. Configuration there is very simple.

It seems the Shuttle can be used with ExpertSDR3 but call me stupid but I did not find any place in the screen where to configure this thing. Any hints ?/

I also would like to flip the mouse buttons because left button frequency down and right up is a bit confusing not ?? Same with PTT on the space bar as I use it on my Anan. How to do this in Expertsdr3 ??

sunsdr.eu/product/shuttlexpress/