How do I simplify the form to relate the options to payment gateway

I used widget for selections of items and the selected items are reflected on the payment gateway.  Is there a way that I can merged the information to make it easier.

You can merged all the items into a streamlined payment process using the Sub Products feature of the payment field.

Check our user guide: Create-Sub-Products-Based-on-a-Product-Option

Let us know if you need further assistance.