Floating Window Switcher - Key Commands

i’m a bit confused, pretty sure i missed this setting…can anybody help me out where to assign key commands for the floating window switcher?
not just keys like under ‘Global’ -> ‘New Workspace’ -> ‘Audio File’ or Audio Montage’ in the ‘Customize Commands’ settings.
just key commands for the ‘floating window switcher’ to switch between already opened windows…

The switcher is a mouse-only control.
But the shortcuts you are looking for can be found there:
But most important one is from the “Global” menu, F5, to toggle between the 2 last accessed workspaces.

thanks a lot, PG. that was exactly what i was looking for. forgot to search in the global settings for key commands.
…the F5 toggle is even more comfortable. thanks man.