In Next Generation supplier registration Needs Customization

We would like to know about the below points Next Generation supplier registration.

1. Supplier Type drop-down – are we able to customize the list to hide some of these we do not want them to select - such as Tax Authority, Employee, Interfirm?  (These values would still be needed be present in the LOV for Sourcing professionals to use internally, they just are not applicable to the external supplier registration process) (Refer the attachment for Reference)

2. Is there a way based on the Country they select to direct them as to which field to fill out (Taxpayer ID vs Tax Registration#), or grey out the one that is not applicable?  Ex. United States we want them to enter Taxpayer ID, but China we want them to enter Tax Registration Number.