Office 2016 for Mac unifies the Mac software with the new Windows, smartphone & tablet versions and reads & writes the same files. But there’s one change you need to know about: how to open and save docs.
If you double-click a file in the Finder it opens in the new version automatically.
If you open a document from Word, Excel or PowerPoint’s File menu, Microsoft takes you to the OneDrive cloud. Microsoft OneDrive can be a good place to store your docs and share them between your Mac, iPhone, iPad or Windows PC or tablet. You can even collaborate with other users and edit the same file at the same time.
If your files aren’t in OneDrive, just click On My Mac. Now you can access your desktop, folders, Google Drive, a server… everything else.
Likewise, when you save a new document you’ll see your OneDrive folder. Click On My Mac, then select the appropriate folder and save.