Add a list box or combo box to a worksheet in Excel

Add a list box to your Excel worksheet from which users can choose a value. Make data entry easier by letting users choose a value from a combo box. A combo box combines a text box with a list box to create a drop-down list. You can add a Form Control or an ActiveX Control combo box.

https://support.microsoft.com/en-us/office/add-a-list-box-or-combo-box-to-a-worksheet-in-excel-579e1958-f7f6-41ae-ba0c-c83cc6e40878