2.2.1 Working with files
Completion requirements
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3. Instruction
3.4. Providing resources via an external repository
If this option has been enabled by your administrator it is possible for users to use external repositories to copy or create a shortcut or alias to their files in repositories such as Dropbox, Google Drive or Microsoft's OneDrive. For a full list of all the repositories that can be used with Moodle see Managing repositories in Moodle docs.
The Moodle site administrator has to install some plug-ins and fiddle with some other stuff. Instructions on how to do this for the more common repositories can be found here: