How to edit Bank account details in Supplier registration (can't find page in visual builder)

Summary:

In the Redwood Supplier Registration - Bank account page, we have a request from users to be able to make bank branch optional (currently required), and hide branch number field. I tried looking for the page in visual builder but I am only able to find 4 pages relating to Supplier registration, but no bank account pages or fields. I've looked through other posts here but could not find definitive, or recent answers. Please help on how to achieve this requirement. Thanks

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):