Is user home directory accessible from owncloud?

In my school each user has a nethserver domain account and a private /home directory located in /var/lib/nethserver/home/usernameXYZ where they store their files.
Owncloud is installed on the same server and user are authenticated via LDAP.
In owncloud files are stored in a different directory /var/www/html/owncloud/data/usernameXYZ.
Is it possible to configure owncloud in order to access to the user domain home directory /var/lib/nethserver/home/usernameXYZ instead of the owncloud default directory?
This is important because students need to access their files from outside school lan when they are at home.

Server configuration
Operating system: linux nethserver 6.8
ownCloud version: owncloud 7.0 fresh install

You can set a different data-directory in your config.php, which in your case would be:
/var/lib/nethserver/home/

However this storage is considered for owncloud to have exclusive access.

ownCloud 7.0 is not supported any more, please use a more current version (8.1 or newer).