WordPress MU

I know it's possible to let multiple users author the same blog with mu. I just don't figure how it works.
I understand each user needs to separately create a blog.
Then author of main blog must define the other users with appropriate role in its admin panel.
So far that's fine.
But then, when I login with the other account, I get to that other persons' admin panel, allowing him to author his own blog. How can he get to write on the "main" blog from his own admin panel? I can't find a combobox or something that allows the user to select the blog he wants to author in.

He has to go login to the admin panel of the blog he wants to post to.

So you mean they have their own user account, but they login from example testblog.domain.com/wp-login.php if they share a common blog which is testblog? Is that right?

Yep.

Like on my setup, everyone has their own blog, but are also listed as authors on the support blog. So if they want to post a question (or tip) to the support blog, they go *to that blog*, login there and then they can post.

what i mean is:
user A has blog usera
user B has blog userb and wants to author on blog usera
user A allows user B access through admin panel.

when user B logs in, he gets to his userb blog admin panel. Question is how does he edit blog usera?

does he have to manually type the URL of the other blog's admin? that works, but that sucks, nobody's going to like that.
andrea, I thought it would be as you say, but when user B logs in from either:

http://mysite.com/wp-login.php
or http://usera.mysite.com/wp-login.php
or http://userb.mysite.com/wp-login.php

Either way he is always redirected to the admin of userb blog.

Is userA added as an author to userA's blog? Gotta make sure their userlevel on userA's blog is up high enough that they can post (not just as a user).

As for typing in the URL, isn't the login listed on the blog's sidebar somewhere? As soon as userB logs in to UserA's blog, it should bump them to the dashboard on UserA's blog.

If all else fails, give me your URL and I'll sign up as a user, then you can add me to a test blog or whatever to help test.

Yes, I used to be able to go into the backend of all my blogs. I can't do it now using my administrator account. I also tried logging in from userblog.domain.com/wp-login.php
It directs me to my actual administrator panel and not the backend of the user's blog.

I figure out what I did that caused it. Weird??

well, to clear things up:
in the situation:
user A has blog usera
user B has blog userb and wants to author on blog usera
user A allows user B access through admin panel.

when user B logs in (wherever he does it from) he is directed to his own admin panel. What I'm asking is wether it's possible, somewhere in the admin panel, to switch the blog he's administering or not.

If the user B goes to user A's blog, and clicks the admin link there, it *works*. I was just wondering if there was a more direct route than 1) log in 2)enter own admin panel 3) go to other blog's home page 4) click other blog's manage link 5) finally be able to author the other blog.

Nope, that's pretty much it.

I knwo what you mean though. In places like Livejournal, there's a drop-down box that lets you pick what blog the post goes in. WP just doesn't do it.

Cna this be automaetd on registration