Admin access to calender

So I am building a site for a client who wishes to have a calendar. They have clients, staff, and managers. So the calendar they want needs to be able to apply to all of these people. They want a calendar that the Staff can login into their admins and see the calendar. This calendar will have the current month and all events that have been applied for. For example, it will say Oct.11 “Car Show at 11pm”. This would not be shown on the public website to the clients, just in the Admins of the staff. Then the Managers will log into their admins and would be able to accept the events. Once they accept the event, it would pop up on the public calendar so that clients could see it. Can your product do this task? Also, it will need to connect with Outlook and Facebook

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