Delete own files (and directories) permission

Hi and thanks for your incredible module !

I'm here because I want the users on my website to be able to delete their own files/directories and only their own, but I can't find a permission or setting to achieve that.
Can you tell me where to look if such a functionnality exists or is it possible that you implement it for a future release ?

Thanks in advance for your answer, and keep up the good work !