Hiding fields on the Request New Supplier Redwood

We are investigating trying to hide certain fields on the Supplier Registration page in Redwood page Self Service Procurement.

When we open the Request New Supplier we see some fields we want to hide or change the default from Yes to No…

Our VB tech says he can not do it as the page is not editable. He thinks it's because the classic Register Supplier is still being used.

Is that the cause. Am I missing a set up for Suppliers for Redwood?

Can we hide them in Classic under Register Supplier or do we turn off that link in classic and that will allow us to make the updates in Redwood Supplier Registration