Not everyone is familiar with Excel. You can protect the data input process by using Excel's UserForm object to collect data. Susan Harkins explains how.

How to add a combo box in Excel The first step is to embed a combo box and populate it with a unique list of category values so we can take advantage of its autocomplete behavior.

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.

How to Use Auto Complete in a Combo Box in Excel 2003. Excel offers tools and characteristics that make it an ideal platform for you to create data entry forms.