ContentBox Admin Security

I am planning to use Content Box to manage multiple sites. I would like to be able to set up several authors who are limited in which sites they can add or edit content. Is there an easy way to do that?

At present, this is not possible. Having site-level permissions by user is planned for the next major release.

Thank you for your reply. I am planning to implement this on a site I am building. I will attempt to do it in a way that could be used elsewhere.