How do you set up a registration form with the choice of multiple date options?

Thank you for contacting us. We have some widgets that you could try, please try the Large Date Picker: https://www.jotform.com/widgets/large-date-picker

You could also use the Date Reservation widget: https://www.jotform.com/widgets/date-reservation 

Please follow this guide to add a widget on your existing form: https://www.jotform.com/help/252-How-to-Add-a-Widget-to-Your-Form

Let us know if you need more help, we will be glad to assist you.