Different Rules for Different Roles

We have two types of buyers on the website: Products for type “A” buyer are free, while type “B” has to pay. I’ve already set that part up using the “Role Based Methods” plugin and it’s been working fine.

What the client wants to do now is bypass the billing details form for “A” buyers, and just have them fill out the shipping form, while “B” buyers will still fill out the billing details form/credit card form as usual.

When users register (this is on a private network), they choose whether they are an “A” buyer or “B” buyer, so their roles are clear to Woocommerce.

Any ideas? I’d rather not play with any core files, but I’m open to other plugins.

https://wordpress.org/plugins/woocommerce/