With this plugin active - the upload/insert icons above the Edit Post content area are replaced with a button to create a related file group. (instead of having the button added to the list?)
Clicking on the Create Related file group - requires a tag to be added to the post before you can create the File Group. However the tag isn't "copied" to the File Group edit window after clicking the button.
But this a great idea and I look forward to using with one of my current projects.