Add a Combo Box Microsoft Excel has several methods for enabling the user to select an item from a list. Data Validation can be used to create an In-Cell Drop Down. Visual Basic programming is another method.   1. Try it: Add a Combo Box Go to Timesheet (2) Select Cell A2. Go to Developer ->Controls. Click on Insert->Combo Box.   Keep going, please. Exam 77-888: Microsoft Excel Expert 2010 4. Working with Macros and Forms 4.2. Insert and manipulate form controls Developer ->Controls->Insert->Combo Box