How to Insert a Combo Box in Excel 2010. Combo boxes are a useful way of entering data into an Excel spreadsheet, combining the flexibility of a text field with the convenience of a list box.

Drop-down lists in an Excel sheet can greatly facilitate data entry. Here's a look at how to use Microsoft Excel's data validation feature to create handy lists within your worksheets.

The Paste Special dialog box opens and displays several pasting options.Click "Validation" followed by "OK." Excel copies the drop-down list to the cells you selected.

Microsoft Excel can save you time in lots of little ways, like adding a drop-down list to cells so that only pre-written text can be entered.