There are two places in SND Dashboard where you can launch the Video Studio, depending on your workflow or what you'd like to add.
If you decide to build your story from scratch, select the Video Studio option from the pink Add to Dashboard button. You'll be prompted to start from a URL, upload media, add text or start from a template.
If you'd rather use some of the most recent content that's been published to a Facebook, Twitter, Instagram or LinkedIn account, launch the Video Studio from the icon at the top of the account stream.
This will launch the five most recent link posts from the account you selected. Now you're able to edit and customize accordingly, or generate the video as is!