I am not sure about the plugin, but selecting the _content table for the list database table then allows you to setup the elements you want for the form. So in my case I wanted articles that were submitted to go into a set category so I set the default catid (s5tr7_content___catid) to the desired category id. Adding a title uses the element (s5tr7_content___title), and so on. As Jaanus says a bit of research you can learn how to set any of the joomla article elements you wish.
Then when the article is submitted I use Form Plug-ins to email a small list of addresses, though can can use PHP to extend this. I created an Article Template for this so the email us nicely formatted.
I also use the plug-in receipt to send a copy of the submitted article to the person who submitted it.
It was a little a bit of work to get going but not too difficult. If I can help in more detail let me know.