I have a spreadsheet with rows which users need to edit before final approval but not afterward. I need some help with conditional protection. Basically, in the attached spreadsheet, if L5 is <> null, I need entire row 5 protected. If L5 = null, then the row should be open for editing. And then this same criteria applied to the remainder of the spreadsheet, with the L column from cell 5 onward as the key. Can anyone help?