Limit external storage for certain users

Hello community,

I´m quite new to nextcloud and have a question regarding the external storage app.
I hosted a nextcloud instance myself and added (via the external storage app) another local drive to it.
Since my Nextcloud instance is used by multiple users who need access to said external storage, I´d like to ask, if there is a way of limiting how much space a user can use on external storage, similar to how you can limit the how much space a user can use on the home directory.
Thanks in advance

I have also connected an external storage.
But all details are defined on that external storage. We have for example external FTP server connected. Details are then set on the FTP server itself, for the user under which it is connected.