Wizards make it easier to configure what happens to the data when a user submits your flow and what the users see after submitting the flow. The wizards are accessible from the flow designer toolbar via the icon labeled what does the user see for Form Action or the icon labeled what happens to my data for Doc Actions. The action settings are summarized in the flow properties flow info tab.
When you drag/drop a form into a flow the form's Doc Action does not get carried along. A flow's Doc Action can be configured to happen once all steps of the flow have been performed or in between individual steps. Refer to the Submissions topic for information on viewing/editing submissions in various states.