Allow for payment by check and PayPal

I am designing a registration form for an event. I want to give registrants the option to either:

1. complete the form, print it, and mail it with their check payment

2. complete the form with the PayPal payment process.

How can I incorporate these selections in the same form?

Though the screenshots in the following guide for the conditions are a bit outdated, the setup is the same as what  you are looking for:

https://www.jotform.com/help/120-How-to-set-up-paypal-along-with-other-payment-options