What is the right plan, 2GB, 6 GB, or unlimited?
                    How can I tell what is right plan for me? 2GB, 6 GB, or unlimited.  Currently I roughly have over 1000 citations and most of them have pdf attachments.  I can only tell that my storage is 100% (>300 MB).  How can I find out the storage space I need now?                
                            
 Upgrade Storage
Please let me know if an invited group member can view, edit and download a document/a file from their end .