I have a spreadsheet and each time I open it it displays the current date. I'd like a command or small macro that places in the cell below the current date the date the spreadsheet was last worked on. If I use a simple copy/paste, it too will auto update each time I open the sheet. Just to be clear, when the sheet is closed and then reopened a new date time will be established and the old one moved into the "date spreadsheet was last worked on".
Hard or easy?