Hi,
We can add the values in the dropdown by using InfoPath.
Double click on the Dropdown to open the dropdown Properties window.
View the List Box Entries option and here you can able to add the three type values.
- By selecting “Enter List box Entries manually”: Here you can add the values by clicking the add button.
- By Selecting “Look Up Values from Data Source”: Here you can show the any repeating field values in this dropdown. Just click on the xpath button and give the repeating node path.
- By selecting the third option you show the any secondary data source values in the dropdown.