1.  go to https://drive.google.com/  
  2.  Either drag and drop the file into your google drive folder or right click and select "upload file"
  3. Once the file is in google drive right click on it and go to "Get Shareable Link"
  4. Make sure the toggle switch is on and then copy the link that appears
  5. Go back to EDUcal and open up the "File Manager" and paste the link into the URL section
  6. Click "Attach"