I want to time stamp when a cell was filled out in the column to the right of only certain columns. We use a simple spread sheet to keep inventory and I'd like to know when someone takes something or checks it back in for accountability reasons. I found a script that adds a note, but that gets very annoying when I only want it to apply in certain areas. So when someone updates columns C,D,I, or J with their initials, I'd like a time-stamp to show up in column E or K. Is this possible with a script? I've attached an image for an idea with the red squares showing where I'd like the time/date showing.