How to add a first page without affecting Page X of Y in DOC1 Designer

The solution is to add the banner page as a separate document, prior to the other document in the publication.

Use the Show When function to determine which accounts get the banner page and which accounts do not.

The banner page will have a Page X of Y of Page 1 of 1, then the original document will start at Page 1 of 1 itself.
UPDATED:  November 16, 2017