How to Vary Page Layouts for a user based on a Book

The user is assigned a primary role I'll call Eastern Sales.  This role has dynamic page layouts for Opportunities.  the opportunities are in Book1 I'll call it.   However, the business wants her to act in a different role but only for a handful of accounts.  So she is working two types of opportunities for the account based on a field on the opportunity.  As Eastern Sales everything works fine.   What she needs to be able to do is have different page layouts she doesn't have today for these two accounts and certain field settings on the opportunity.  What I did