To insert a drop-down box, you'll first have to unlock Word's Developer Tools. Microsoft Word 2010 and later, including Office 365 and Word 2019, come with Developer Tools, but they aren't visible ...

Step 5: A drop-down box will be added to your Word document. You can now customize the drop-down menu by clicking on the Properties button. Step 6: In the Content Control Properties dialog box, ...

In the Text Box drop-down list, ... You can format the text box by selecting Shape Fill, Shape Outline, and Shape Effects. 6] How to change the default formatting for a Text Box.