The actions
The actions will define what to do with the attachment of an email that meets the conditions of the rule.
Clicking on "Add an action" opens a panel with the different types of action.
If I choose to send to Sharecan for example :
Note that
the destination folder will be created automatically in Attachments if it does
not exist.
You can add
several actions to copy the attachment to both sharecan and dropbox for
example.
See the page on possible conditions.