Web you aim to add a dropdown list where each item appears just once.
How to add drop down list options in excel. In thesourceinput box, enter the name of your named range for the list source. In the dialog, set allow to. Select the cells that you want to contain the lists.
Edit, copy, delete, add or remove items without changing the data. In the source box, add new list. =unique (a2:a21) optionally, you can sort.
Click data validation under the data tools section of the data tab. Precede it with an equal sign. In the data validation dialogue.
To extract the unique items, use this formula: Make sure the items are consecutive (no blank rows). Web to insert a drop down list in excel, you use the data validation feature.
Select the data tools group from the data tab.