The Marks Panel
Since IDImposer models and generates an entire press sheet, it cannot rely on InDesign’s printer marks printing option. The Marks panel allows considerable control over these marks.
Note that if you need to add some other types of marks, such as different color bars, or slug information, it is easy to add them yourself to the output of IDImposer. Since the output of IDImposer is just a new InDesign document, you can use any of InDesign’s tools (such as Place) to add additional information, before printing.