Default path to saving files

Hope someone has the answer. Clients save work docs, xls, etc. to local hard
drive as default path is C drive. Is there means that, unknown to client,
when saving to C, the docs, etc. are auto saved to a designated folder to a
mapped network location. Is there any other means to save files such as doc
and spreadsheets to more than one location concurrently?
Thank you,
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June