Happy to oblige.
Capture sharpening is performed by DXO Optics (or whatever it's called now) automatically and is based on the Camera and Lens module loaded into the software.
What I meant by the word 'key', was 'creative sharpening', set out in one source as
"The term creative sharpening comes from the concept that this sharpening is done for more aesthetic reasons rather than to remedy a technical issue, which is the case with both capture sharpening and output sharpening." (
https://www.dpmag.com/how-to/tip-of-...and-lightroom/). I was a bit lose in my terminology. The work 'key' as applied by me, is not helpful.