Create a global calendar that shows room reservations and staff comitments.

Question

I am trying to create a global calendar that allows and shows "All Company" members reserved rooms, workspaces, and equipment. So we have a master calendar for the facility. I keep running into blind alleys. For example, why did MSFT deprecate the calendar web part in Sharepoint? Why do you not support nested groups and allow groups to have their own combined calendar showing when these resources (rooms, equipment, people) are available? Sharepoint calendar lists are brain-dead. The group .calendar web part is not well-documented and does not seem to have the correct functionality. Please email me if you can point me in the correct direction.