I submitted my assignment by selecting a file on Google Drive. I followed the instruction and granted Buzz access to my Google Drive. But I got informed by the teacher that she does not have access to the files. I assume Buzz should handle the permission issue automatically since I granted Google Drive access to it. If I need to set Google Drive permissions for each assignment for every teacher, it will be very tedious. Then the benefit of using Google Drive is totally lost. Please take a look at the issue and get it fixed.