Customizing Your Keyboard and Mouse in SketchupFree?

This is the critical bit that I was curious about.
I can probably work out something using autohotkey or similar chrome plugin - but I’d rather use built in functionality where possible instead of coming up with band-aid solutions.

Thanks for the reply.

On a related note - is there an index of existing hotkeys/shortcuts for Free?
Someone put together a similar list for Pro: Complete List of Keyboard Shortcuts