Hi, I use a spreadsheet at work to track employee attendance. The particular bit of information I am concerned with is Mandatory Overtime (Mando). in Cell J8, it has a space for them to enter the time that Mando was posted. Below it in J9, is the cell that they should be putting a time that Mando was lifted. It either needs a specific time or has to say "Not Lifted" The problem is a lot of the times, J9 is being left blank so that there is only a post time. This shouldn't be happening so I am wondering if there is a way to force something to be entered in J9 if J8 has content?