When you log in to Kami, you will be directed to the open document page. This is a greyed out page, with the option of opening either from your computer or another location.
On the left is the Drag a File or Click here box. This is where you can go to access your locally stored files from your computer. Just click the box to access files or drag files from your desktop.
On the right side, you will see the option to open a file from Google Drive (on the left), Box (middle), and Dropbox (on the left). To access your Google Drive, Box, or Dropbox, just click the icon and you will be forwarded to the selected location.
As you can see in the image, Box and Dropbox are greyed out. This is because we do not currently support Box and Dropbox in the Kami extension. However, you can access Box and Dropbox when using our web version at web.kamihq.com.