An Active Submission that is marked with the Status "Incomplete" can be edited on the Active Submissions list on your Author homepage.
Editing an incomplete submission
To edit click the 'title' of the submission (highlighted in blue) to go to the active submission form where you can update any of the five-steps of the form. Save the changes to each step using the 'save' button at the bottom of each page.
Deleting an incomplete submission
You can delete an incomplete submission by clicking the 'delete' link in the status column on the Active Submissions list on the Author page.