Pathagoras provides two distinct ways to add ('shelve') a book to the active library.
•If a bookshelf is empty when you are viewing the Libraries & Books screen, you can Quick Set the Book. Quick Set automates the process of placing an item onto an empty shelf.
•If you wish to replace an existing Book with another, or re-point an existing Book to a new location (perhaps you moved the files to a server or to a cloud location), right-click on the Book you wish to replace or re-point. This page discusses re-pointing in more detail.
•If you wish to rearrange the Books in a specific Library, do so via the Settings screen.
Click the button in the menu bar to read more about shelving books.