This documentation page is for Quform version 1 and may not be applicable for Quform 2 click here to visit the documentation for Quform 2.
Dropdown Menu → Settings → Advanced
You can convert your element between Dropdown Menu, Multiple Choice and Checkboxes. Select the element type you want to change to and click OK at the warning message to do this. All your options and mostly all of your settings will be copied over, the only settings you may lose are those that are not shared between the elements.