How do I create a list of participants

You can create a custom form with Name, email, other personal info form fields to collect and create a list of participants.

Here are a few useful guides to help you out:

How-to-Create-Your-First-Web-Form 

chapter-2-Create+Forms 

Quick-Overview-of-Form-Fields 

Provide-a-Detailed-Summary-to-Your-Respondents-Using-Form-Fields 

You may also check these sample form templates: https://www.jotform.com/form-templates/category/registration 

Do try and let us know if you have any further questions.