You need to explain in much more detail what you want. To start with, what is the "file repository"? Moodle has dozens of https://docs.moodle.org/en/Repositories. And all of them are for files!
It is never a bad idea to look around before starting to discuss. See the top part of https://moodle.org/mod/forum/view.php?id=1807.
add , delet or change repository
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