As such, you must control the data other people enter. That’s when you need Data Validation. Microsoft Excel makes this job simple. How to use Data Validation for Excel Cells ...

We will show you a method that can then be applied to your data. To create a validation list with multiple columns, we'll need to trick Excel to accept to create a validation list with multiple ...

Data Validation in Microsoft Excel allows users to control the type of data entered into the worksheet. It picks from a list of rules to limit the type of data that can be entered into a cell.

Go to Data on the Ribbon, and in the Data Tools group, choose Data Validation. The Data Validation window that pops up allows you to set your criteria in many ways. For our example, choose Whole ...

Figure A We’ll add a data validation control to this sheet. Click the Data tab, and then, click Data Validation in the Data Tools group. In the resulting dialog, choose List from the Allow dropdown.

Select a cell — I selected B2. Click the Data tab. In the Data Tools group, click Data Validation, and then click Data Validation from the dropdown. From the Allow dropdown, choose List.