If you have files in Dropbox you can add them to branches or task cards in MindGenius Online by clicking "Add from Dropbox" on the attachment section either by selecting the branch in the map view and expanding the Properties Side Panel 
from the upper right corner, or opening the Task Card in the Task or Timeline views.
When you click the dropbox icon a dialog window will display to allow you to sign into Dropbox using your Dropbox credentials
Once you sign into your account you will be presented with a list of available documents. Simply click to select the document you want to add to MindGenius Online and select "Choose"
