Publication pages depends on what pages source is chosen for the publication. For different page sources, "Pages" page will look different and it possible to set some parameters for separate pages.
Open "Components → ARI Smart Book → Books" page on Joomla! backend, select a publication with help of checkbox in publications data grid and click by "Pages" button in toolbar or click by icon in publications data grid to open the page with pages of the selected publication.
Links to pages with description for different pages sources below: