To upload a new PDF file, first click on the Add (the + icon) shortcut in the app menu. Click on the Add File option.
Select New Title under Type and click Browse to find the desired file on your computer and upload. Select the associated project name under Project. Click Save.
[ Tip: You should only create a unique title once. You may upload subsequent versions of that unique title by following the steps above but select New Version instead of New Title under Type above. ]