How to offer customers to either pay by check or credit card?

Hello newenglandswim,

If I understand your question correctly, you want to allow your users to be able to pay by check or credit card. Is that correct?

Yes it is possible to achieve your requirement and the following guide should help you on this:  http://www.jotform.com/help/120-How-to-set-up-paypal-along-with-other-payment-options 

You may also like to check the following guide as well and see if it fits into your requirement:  http://www.jotform.com/help/182-How-to-Create-a-Basic-Multiple-Payment-form 

Hope this helps.

Do get back to us if you have any questions.

Thank you!