I run a WordPress MU 2.9.2 installation for a university.
everybody with an email address that ends in @example.com can have as many blogs as he/she wishes.
now, some projects require that external users (with other email-adresses) work together in a blog.
I can add external users manually. but I want to restrict them to be editors or admins for only one blog.
and/or at least they must not have the right to create new blogs.
I have searched for a plugin, but did not find one.
I have looked in the database, but did not find a way to restrict this.
Is there a way to do this.
any hints would be much appreciated!