How can I share a calendar on Outlook 2010 with the entire company?

I would like to have a calendar in Outlook 2010 that everyone in the company can view but only a couple can add/delete items. I would want to be able to turn the calendar on and off so that people can only view when they need to. When viewing this calendar, I would not want it to overlap with people’s personal calendars. Is there any way to do this?