To integrate Dropbox and save the files submitted by your users in Dropbox folders is very simple.
Create a page and save it.
From the Settings tab, go to the Dropbox area and click the Enable button. A Dropbox connection will start and it will allow you to select your Dropbox folder.
Once you connect a page, the connection will be available to other Pages. Each page can have it’s own folder in Dropbox to save the files.
The sync is automatic; once a page has file submissions, these are automatically synced with your Dropbox account.
Only one Dropbox connection/account is available for all pages.