This 'how to' can be recreated in either NIntex Forms 2016, Nintex Forms 2013 or Nintex Forms 2010.
So you may have found yourself in this scenario - you've created your SharePoint list, and added a Nintex Form to the list. As you're designing the form, you realize you've forgotten to add in a column. Now you could exit Nintex Forms, go back to your SharePoint list and create a column through the SharePoint interface, or you could create a list column from directly within the Nintex Forms designer! I think I know which sounds better
To do this, you'll need to click on the Create Column button in the Nintex Forms Designer Ribbon.
The Create Column dialog will appear, enter the name of the column, and the type. Click OK.
The new SharePoint column will appear in the Form Controls Toolbox, in the List Columns category. Now you can add it to the Nintex Forms designer as you would any other control and continue designing the form. You will need to add a Label control next to the new List Column control when it's added to the form. During Runtime, information entered into this new control will appear in the SharePoint list.