Editing Checkout Steps in Commerce

Hello,

Is there a way to edit the checkout steps in Squarespace? I want to use the commerce function to create an in-house ordering process. Essentially, a person in a company could order parts from within their company. So I want to remove the payment method and address the steps. 

Is there a string of CSS/html to get rid of those? 

Thanks! 

The checkout page can not be altered. It is an SS security feature.