Default nextcloud user behavior and files

Running the appliance version of nextcloud from univention. Currently, we are using it to connect users to external SMB CIFS shares. Wondering is there way we can disabled users ability to use any local space so we can force them to only be allowed to use the external SMB shares that we allow? Also, how to make it so that all of their local space has no file created within them by default. See attached image.

You can change the default file creation behavior in config.php by setting this:

'skeletondirectory' => '/path/to/nextcloud/core/skeleton',

The directory where the skeleton files are located. These files will be copied to the data directory of new users. Leave empty to not copy any skeleton files.

Defaults to core/skeleton in the Nextcloud directory.