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.

Figure B How to use the UNIQUE () function in Excel If you’re using Microsoft 365 or one of the 2019 standalone versions of Excel, you can quickly create a dynamic list using the UNIQUE () function.

Learn how to create a drop-down list in Excel without or with color using conditional formatting and data validation rules.

Creating a list of duplicate values that’s separate from the data source is easier than ever thanks to Microsoft Excel's FILTER() function.