You can easily upload documents to your data package and distribute it to the members of your Group.
To do so, go to documents. By default you will see one file (air-navigation-banner.pdf) and one folder (Airport charts).
You can create subfolders to organize your data, for example "Checklists" or "Operation Manuals". As with Air Navigation Pro, you can add pdf files related to waypoints. To do so, create a folder inside "Airport charts" with the ID of the waypoint and put inside the pdf files.