The folder upload will work in browsers that support Chrome 7+.

To upload folders in your Workspace :

1. Click on 'Upload' button from the top left side panel and select "Folder Upload" option from drop down menu.
2. A pop-up will appear with all your desktop folders.
3. Select a folder and click Ok .
4. A Upload pop-up will appear.
5. Click on the Click Here link and from the Select Workspace drop down menu select the workspace where you want to upload the folder
6. Click on the Upload button for the files to get added in the workspace

Note: If the folder has sub-folders, then the folders will be created with the same hierarchical folder structure.