If you are asking about the charts in FormsCentral, we do not support editing/creation of process charts. The charts for the collected responses are created automatically.
In FormsCentral, open the form and select the 'Summary Report' tab.
See: http://forums.adobe.com/thread/884166 for more information on 'Summary Report'
If you like a customized or create charts on your own, then you may want to export the responses to Excel and do the charts there.
See http://forums.adobe.com/docs/DOC-1383 for more information on exporting the responses.
If it is not FormsCentral, which adobe application do you have in mind?
Hope this helps,
Thanks I will have a look at that