You should go in the Book Format script line and then in the generation options property, as shown above, and then specify the Output Style name, as shown in the image on the right.
Note that you can also select multiple QuarkXPress or InDesign files to convert to PDF, using the Convert QuarkXPress Files to PDF or the Convert InDesign Files to PDF menu items of the QuarkXPress menu or the InDesign menu.
Topic 180220, last updated on 22-Dec-2022