USS - Create home directory automatically without AUTOMOUNT

[begood]

Hello,

I'm a system programmer beginnner and one of my first tasks is to find a way to automatically creates the new user's home directory in USS at login.

I proposed AUTOMOUNT but this is not appropriate because of the large number of zfs files that would be created.
I searched for a way in RACF and ZSECURE without result.

Do you know a solution to create the new user's home directory at login without creating a mounting point for each user ?
Perhaps can i use AUTOMOUNT with one mounting point per groups instead of each users ? I did not find how to do this...

thank you in advance for your proposals.