You're probably wondering what are item copies? They are physical books, periodicals, electronic media and other types of resources that you can have in a library. They are added on an institution level meaning that each institution has its own item copies. Each institution can (and should) have multiple item copies (physical books, periodicals, electronic media and other types of resources) which can be lent out to users.
To add an item copy to an institution:
1. Navigate to Library > Manage Item Copies.
2. Using the institution switcher select the institution to which you're adding the item copy.
3. Click Add New button.
4. Click on Item field, start typing in the item name and suggestions will be shown. Select the item from the list.
5. Enter the copy number, location, the row where the item will be stored and click Save.