How do I create a question that drops down to another if one is applicable?

For example:

Does anyone live in your household? Yes or No If yes, please list name of person and relationship to patient.

Hi, thank you for contacting JotForm support.

You can use the Show / Hide field condition to conditionally show or hide the field based on the user's answer.

Guide: https://www.jotform.com/help/316-how-to-show-or-hide-fields-base-on-users-answer

You can check and clone the demo form I have created for you: https://form.jotform.com/203637302890050.

Guide: https://www.jotform.com/help/42-how-to-clone-an-existing-form-from-a-url

I hope this helps. Let us know if you have further questions.