That feature is something that is currently being looked at for inclusion within the dashboard system, but is not currently available. What we find works best for our internal development is to create a company profile for your application development (new user id and profile at profiles.yahoo.com) and have that as a shared account. As updates are included to support additional features we'll push these out to the forum to let everyone know.
Jonathan LeBlanc Senior Software Engineer Yahoo! Developer Network Twitter: jcleblanc