New Campaign creation it's possible through the Campaign Wizard that drives user publishing the Lookbook and customizing the sharing settings based on the target.
User can start the Campaign Wizard through:
MY LOOKBOOK page, clicking on Create New Campaign button over each Lookbook (this button will be displayed only if there aren't Campaigns for this Lookbook);
the Editor, clicking on Custom Share from the CAMPAIGN button;
CAMPAIGNS page, clicking on the top button Create New Campaign and choosing the Lookbook.