After uploading, adding metadata and reviewing a file, you may want to publish the file, so read-only users are also able to view this content item. You can do that by opening the detail view of a content item or opening the batch edit and switching to the tab “Permissions”.
To publish a content item, you could now click on “Add” in the top right and then select the corresponding permission set. Permission sets are templates of permissions that determine which user role can view, access, download, edit, delete and manage a content item. How the permission sets are named depends on the configuration. The permission set to publish content items is usually named “Approved”.