How to select cells using Find All in Excel Selecting cells that contain specific values is probably a familiar task using Find, but I’m going to show you some options that you might not ...

If you want to add a header or footer to all sheets, select every sheet by right-clicking one of the sheet tabs at the bottom of the Excel screen and clicking "Select All Sheets" in the pop-up menu.

Select Unhide Columns from the drop-down menu to reveal all hidden columns within your selection, or select Unhide Rows to do the same for rows.