Change data directory for specific user group

Server
1

Is this possible? My goal is basically for the admin to have access to all files uploaded by users in a client group. I gather this is currently impossible, and the workaround is to set the user’s quota to zero: How to have admin access to all users files within the WebGUI

But I’m thinking of another possible workaround. If my data directory is
/var/www/owncloud/data/
And I have a user called admin1
/var/www/owncloud/data/admin1

Can I create a new user whose home directory is inside that like
/var/www/owncloud/data/admin1/user1

2

From what i know the data directory is fixed to one location (the one defined within the config.php).