Create Google Docs Calendar Schedule and Satellite Schedules that can Sync

We have a large medical practice with numerous doctor employees. Currently, there is one large Master Schedule which is a Google Docs Spreadsheet Calendar. The columns are hospital work locations. The hospital schedulers can enter the work required. The practice supervisor can then assign the doctors. Each doctor can review the schedule and see where they are working. We are seeking to create multiple small schedules that can sync bidirectionally with the Master Schedule. That way each worker wouldn't be aware of every other workers job. Additionally, each scheduler wouldn't be aware of work at competing hospitals. Synchronization would need to support: -Creation of events in all locations -Modification of event details in all locations. -Deletion of events in any will propagate to all location There are 3 parties and jobs involved in running the schedule. 1. Multiple Hospital Schedulers & Calendar Each work site has a scheduler. They book or schedule upcoming cases. Sometimes things changes and they edit or cancel previously scheduled cases. I would need each hospital scheduler to have their won individual calendar schedule which ONLY they would view. I need them to be able to edit their schedule calendars and have that appear on my Master Schedule. 2. Worker Schedule & Calendar Each worker should have a schedule calendar of the sites where they commonly work. They should ONLY be able to view their schedule calendars. There is no need for them to edit anything. They only view. 3. Master Schedule & Calendar This is what I view and edit. After the Hospital Schedulers (#1) schedule cases on their calendars and they have synced with my Master Schedule, I place worker names on my Master Schedule which should sync with the individual Workers Calendar(#2) and the Hospital Schedulers Calendar (#1).