I am trying to create an animatic in blenders Video Sequence Editor and I have found a tutorial by a Mathieu Auvray on the Project Gooseberry youtube page where he shows a feature where you can import different VSE scenes into one scene.
However, when I followed his tutorial, I noticed that a few things he clicked on that weren't in any of the versions of Blender I could find.
Here was Mathieu's screen:
Here is mine in all my blenders:
Is there a plug in I am missing, or a setting I haven't turned on? I have been googling it for a while and have been coming up empty.