I know the title sounds familiar, but after lots of searching, I have only found answers that are close but not quite right. (I have searched! Promise :-P)
Anyway, I work for a computer lab which is switching from MT to WP, but what our director really wants is the MT ability to switch between the different blogs on the site through the same interface. I installed WP first, then WPMU instead. I see that I can do this as the site admin, but when I put in another user as an admin on both the root blog and his own, he has to change the URL to move between blogs. I am not new to WP, but I am new to MU. Is there a way to create multiple site admins? What I would rather is for the lab bloggers to be admins on their own blogs, and the group blog, but be able to move between them in the same interface. Here are the two of the blogs I have created/moved just to see how the program works.
http://testblog.humlab.umu.se/patrik/
and
http://testblog.humlab.umu.se/
(still some style things to work out, but it is by far finished at the moment)
Any help with the interface question would be great!