1 Calendar to combine multiple calendars

I have a department with users and each user has his own calendar.

Is it possible to have a View only (read only) calendar that shows all the calendars of in one view?

We want to have this type of calendar because the group members want to see all the events/meetings of everyone in the group in 1 calendar.

How can we do this? Thank you

http://peteroy.blogspot.com/