Dreambook users

I’m sure there’s an obvious answer here, but I’m not quite sure what it is… I have an established dreambook guestbook for my site, and I’d now like to give another person management access to it as well. Is there any way to add access for another user, short of giving them access to my username? It’s an ad-free banner because it’s associated with a DH-hosted site, so I don’t want to lose that if possible, and I don’t want to give them access to my whole account.

Hope my question makes some sense, it’s a little late at night for me to be too coherent!