From PC Dot Com:
Whether you need to share your calendar with the entire office or if you just need to give your assistant the ability to view and modify your calendar, Shared Calendar is the solution for you. Shared Calendar sets up a separate calendar within Outlook leaving you the ability to still use your personal calendar for yourself and a shared calendar for your colleagues. For teams that work together with common deadlines or for dispatchers who need to plan and schedule for a small or large group of service technicians. Take your whiteboard calendar off the wall and put it into Microsoft Outlook with Shared Calendar.