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.
Do you want to increase the entire Grouped Values Dropdown widget like this?
To achieve that add this CSS code inside of Grouped Values Dropdown widget Custom CSS field:
I have set height to 500px inside of my form. You can use any other height value inside of you form. Here is my cloned form: https://form.jotform.com/62175435565965
Feel free to clone it.
Hope this will help. let us know if you need further assistance.