The first concept to grasp is that there are master pages and document pages in a QuarkXPress document - two completely separate things. That includes fonts, images and text. A QuarkXPress document can have multiple master pages. A master page is built and edited the same as a document page. Please click here for more .
Every document uses a default master page.
If you discover after laying out a document page that you could have made a master page instead, you can still copy the objects from an existing page and paste them into a master page and continue from there. Master pages are ideal for headers, footers, text blocks for linked text chains, column guides and non-printing page guides for objects to snap to. Repaginate your document. When you insert or delete pages, they may reflow and cause a cascade of master page changes to your document. This becomes tricky when working with documents with facing pages.