The Start event wizard allows you to start the workflow with a SmartForm. You can instead opt to create a formless workflow for use as a sub-workflow, or manually integrate with a workflow by directly adding workflow rules and actions to the form. Do this by selecting the other (e.g. as a sub-workflow or manually) option in the first step.
The item reference and form state configuration is located on the Folio and Settings page. When you design a new workflow, the integration is configured on the base state (form integration no longer creates a new form state, but you can configure it to create one if necessary).
On the Start Form page, you can map form values to workflow data fields.
A summary appears at the end of the wizard detailing the changes that will happen as soon as you click Finish.
See the following Help topic for more information on the Start event wizard:
Start Event Settings