I have been using it with Kodi for 7-8 years, but I couldn’t do it, or have it done.
What I want is this: I want the live TV to be switched to groups with one touch when it is on fullscreen.
I would like to see the menu on Live TV as pictured.
There is a groups window (I believe it’s actually a dialog). I use a remote key to bring up the groups list when in my guide page. Unfortunately, I’m on vacation and can’t remember offhand what the proper window name is, but if I can VPN back home to search through my keymap, I’ll post it here. You’ll need to map a key yourself to open the window, but it’s pretty trivial.