Is there a way to set up custom validation for a drag and drop/rank question in order to prevent participants from advancing to the next question unless they at least click on each item in the list once? I have about 20 items in my list.

Hi @MauroUsabilitySci! Although I do recognize you are asking for a custom code solution, you can accomplish something similar using our built-in validation feature. Feel free to reach out to our Support Team with any additional questions about this feature. 😀