First, click on the customize button in the top right-hand corner.
On the next screen you'll see a series of tabs at the top. Click on "Settings", which will reveal another set of tabs/links just under the first set. Click on "Permissions"
On this screen under the heading "Blog Authors", you can see a list of all of the authors allowed to post to this blog. In this case, only one person is authorized to post to this blog. To add people to your blogging team, click "Add Authors".
You can then add the email addresses of people you'd like to invite to the blog.
The window will show the invitations you've sent. Once your friends/students accept the invitation to blog with you, they will be listed under the subheading "1. Authors".
Finally, under the heading "Blog Readers" you can see the settings for who can read the blog. It can be public (Anybody), by Invitation (Only people I choose), and only within the author community (Only blog authors). If you are concerned about privacy for your students, the second and third choice may be ideal.
