I have a situation where a lot of my code is executed by "Worksheet_Change".
However there is one part that I would like to add in and I think
"Selection_Change" may be the answer - let me explain:

If a cell is changed in the range ("C9:K9,M9:U9") then I would like the
corresponding value in Offset(6) to be set to "". Something like:-

Row 9 contains integers, row 15 text.

For Each Cell In Range("C9:K9,M9:U9")
If mycell.value is changed then
mycell.offset(6).value = ""
End if
Next

I know the above code is nonsense but a pointer would be useful.
Sandy