If you haven't tried it yet, you might not know that by integrating your Outlook calendar with Workfront, you can see all of your meetings and your work (the stuff in Workfront anyway) all in one place! Try it today. This article explains more.
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Caveat: Unfortunately, it does not block your time off as busy if you have meetings in your Outlook. It's not a full integration, just a window into Outlook.
I would love to see some further updates on this integration, e.g.: