A drop-down list in a Microsoft Word document lets readers select from a predefined list, handy if you're building a form, ...

The best practice is to create a separate worksheet for your drop-down list. To create a new tab, click the "+" icon next to the last tab in your spreadsheet. Double click the tab to rename it.

Another way to tweak the notifications area is to adjust each icon’s drop down menu. Click the upward facing arrow again and click Customize… in the pop-up window.