I am trying to create a simple food ordering form that will calculate the payment. I cannot seem to add or subtract fields, or change the wording in e

Please try using the Product List field and see if that is what you're looking for. Here's a guide on how to add it to your form: https://www.jotform.com/blog/introducing-product-list-form-field/

Please try it and let us know if you need further help. Thank you!