Correct. That's the only way.

Signature
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> Can you 'open a shared calendar' and select a group which may contain about
> 10 users? Would this display 10 user's calendars plus one for mine?
> (Assuming that there is no public calandar for the group and this group does
> not have a mailbox.) Adding 10 users one by one is the only way?