Head to your Excel database, and when you want to add a new value, right-click on a cell and select Pick From Drop-down List. Select one of the existing values and you are good to go.

Select a cell where you want to show the drop-down menu. Go to Data > Data Validation. Select the List from the Allow menu. Write down your options in the Source box. Save your change.

Step 3: Pick the Allow menu from the subsequent window that pops up and select List. Step 4: Within the Source field, enter exactly what you want to be included in the drop-down list. Be sure to ...