When you work in Orion Report Writer, in the left pane, you see a tree with all reports available. When you create / modify a report, you have the possibility to put it in a specific folder.
That being said, in the web interface of NPM, everything is placed under Custom, then the folder were you originally placed the report. It would nice to have the documents sorted the same way in both interfaces (or at least a way to toggle between the 2 ways).
Thanks