To apply data validation rules to a selected cell or range, head to the "Data" tab on the ribbon, and click the top half of the "Data Validation" icon if you're using a wide screen, or the left half ...

Follow the steps below to create a drop-down list using data validation in Excel. If you want to add a message pop up, you can click the Input Message tab and check the checkbox for “Show input ...

Microsoft Excel's Data Validation tool lets you add a drop-down list to a cell based on existing data in a column. However, how this works depends on whether the source data is part of a formatted ...