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.
I am not currently seeing the screenshot that you provided. Please attempt to add the screenshot once again. You can view this post on how to add screenshots: https://www.jotform.com/answers/277033
To confirm, you would like to have an option, where your user can choose either Single or Couple, if that is the case, you can use radio buttons. That allows your users to pick just one of the options available.
If you would like for certain fields to be shown when an option is selected, you can use Conditional Logic.
I hope this helps! Please inform us if you need further assistance.