You can easily create a drop-down list in Excel to limit the values that can be entered in a column. Here's how to set one up.
How to populate a dropdown with data from another sheet in Excel Your email has been sent If your list and dropdown are on different pages, you’ll need to know this ...
You can add a column in Excel by right-clicking or using the “Insert” option. These features are helpful for adding new data to a spreadsheet.