Save Completed Nintex Form as Doc or PDF then Copy to SharePoint

We are currently using SharePoint 2016.  My company wants to have employee request forms in SharePoint be saved to a general SharePoint list that takes parameters (ID, form type and effective date) after the form has been completed and approved.  We are converting old paper forms into Nintex Forms then using Nintex Workflow for the approval process.  

Instead of asking the user to use the Save to PDF feature in SharePoint we would like the completed and approved Nintex form to automatically be saved as either a doc or PDF then save the document to a central SharePoint list that is grouped by employee id.  

I've tried the Document Generation & Copy to SharePoint Nintex Workflow Controls but have not been successful.  

Any help would be greatly appreciated!