Content Organizer rules are based on properties defined in content types. Creating custom content types with custom fields will provide the most flexibility when creating Content Organizer rules.
The following walk-through will show you how to create a Content Organizer rule based on the Title property of the Document content type. If the file name of a document placed in the Drop Off Library has the text "Project-X" in it, the Content Organizer will automatically move it to a library named "Project -X Docs". In the exercise later in this lesson, you will go further and create a custom content type with a custom field to use for defining a Content Organizer rule.