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.
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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 mean something like this example below with option groups inside a main option?
<optgroup label="Options 1">
<optgroup label="Options 2">
If that's not what you meant then could you be a little more specific or provide us with an example of what it is you seek for this?