You can only print files or documents from the library with the prior permission of the Library Manager.
You can only print files or documents in other applications on your devices with prior "Share" permission from the Library Manager. Open the document and select this share icon from the top document menu bar. Then a share menu will appear.
Select PDF if you wish to include your private annotations in the shared document, or Original to print only the original document.
Now you can select your print option.