I am using Google Sheets. I have a lot of columns. The only ones that count are: a column with dd/mm/yyyy named "start date" and a column with dd/mm/yyyy named "finish date". I want to:
- highlight red if there is a start date but no finish date.
- highlight orange if there is a finish date but no start date.
I haven't been able to get a formula (in conditional formatting) to work.