Shaun, that facility is "greyed out",....!

Paul, I use have used both & prefer Chrome

& yes, you will need to setup formulas to pickup when there are scratchings

as they say, life wasnt meant to be easy:)

Nobody told me there'd be days like these,..!
Stugots, I just installed Chrome, about to suss it out now, thanks again

lol welcome to the world of excel