Calendar Dependency resembles the dependence relation in the real world. It can be incorporated in resources allocation, or group calendar management.
If calendar A depends on calendar B, then any events added on calendar A will be added to calendar B. Moreover conflict resoultion for calendar A will automatically include events on calendar B.
Example 1: Suppose your corporation has a fancy projection system installed in a conference room. The conference room is a multi-purpose facility used for reqular meetings as well as video conferences. In this scenario, you may create two calendars projector and conferenceRoom to manage the two resources, and have calendar projector depends on calendar conferenceRoom. With this setup, reserve the projector automatically reserves the conference room, and schedule conflict checking for the project will automatically includes current schedule of the conference room.
Example 2: Suppose you have a workgroup that meets occationally at an unspecified time, and you are in charge of finding a common free time when it comes. In this case, you create a calendar and make it depends on all memeber's calendars. Once set up, the calendar will behave like a common calendar for the group. Events scheduled on the calendar will be transparently added to all group members' calendars.