How to set hotkey for recording voice over?

When recording a voice over in Fairlight I always have to manually click the record button with the mouse. I can stop the recording by pressing the space bar, but how do I start it again with a hotkey? I have looked in the usual place:

Preferences - User - Keyboard mapping

But I don't find any hotkey there. There seems to be no way to set a hotkey for this?

I am using Resolve 15 Beta 2 and am on Windows.