I have 360 students who attend labs on different days of the week, I'm not going to grade on attendance, but I want to track easily which students are missing lab. Without having to page through many calendar days or individual students, I'd think the easiest way to do this is through the .csv file, I however want to stop doing this manually, I'd like the sheet to highlight students that have missed more than X number of times, is anyone a spreadsheet wizard that has written a marco or has an example sheet with a set of commands that could do this?