By default, when you start the OneDrive sync client it will only sync the folders in your personal OneDrive to your computer.
However, you can also sync folders that others have shared with you. This gives you offline access to these files as well as your own. You can sync folders that you have "Can Edit" permission as well as "Read-Only" permission however you will not be allowed to modify anything in the "Read-Only" synced folders.
Once you have been given "Can Edit" permission to a folder and it has been shared with you, you can follow these steps to sync that folder content.
If more subfolders are added to the original shared folder, they may not sync automatically on their own. You will need to manage what is synced and what isn't manually.
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