What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You can achieve what you are looking for by using Conditional Logics, in this case you can control which dropdown menu to SHOW/HIDE depending on an option previously selected in a an other dropdown menu.
Check this example made with colours:
Main dropdown menu options: Red, Green, Blue
Red dropdown menu options: Lightred, Strong Red
Green dropdown menu options: Lightgreen, Strong Green
Blue dropdown menu options: Lightblue, Strong Blue
Feel free to clone it in order to make further investigations,
Hope ythis helps.
Please let us know if you need further assistance.