Need to place Excel spread sheet in place of Nintex form and create a work flow. Technically, Excel spread sheet should work as a Nintex form.
I spoke with one of our Tech Evangelists, who said you can create a doc library or SharePoint list to house the form as you need, then run the workflow against the Excel spreadsheet in the library or the list item. Hope that helps!
Can you describe with the screen shots.
Retrieving data ...