How to share Calendar and Free Busy with Office 365 and Exchange 2010 SP3 on premises

We currently have Exchange 2010 SP3 installed in our organisation for staff mailboxes and also a Office 365 setup for our students. We have some standard domains and one federated domain on Office 365 and one on-premise domain. We have a Exchange 2010 Hybrid setup to share with Office 365 and initially set up for free/busy sharing. Now we'd like to have full calendar sharing for staff (but not students).
Any ideas where and what to configure?
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Peter HutchisonSenior Network Systems SpecialistAsked:
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Jason CrawfordConnect With a Mentor Transport NinjaCommented:
If you are planning for co-existence between your local Exchange server and Exchange Online, you'll want to use the Staged Migration method alongside Directory Synchronization provided by Microsoft:

The DirSync process will allow calendar sharing and free/busy.
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