User passwords at CUA setup time

Hello,

I'm looking forward to setuping CUA.

Lets say CUA is system ABC, child systems are XYZ1 and XYZ2.

User John exists in both XYZ1 and XYZ2 with same username, but with different passwords.

Now the question is, if I setup CUA and pull John to the central system ABC, which password rule will apply?:

1. John will be able to logon to both XYZ1 and XYZ2 with the same password, lets say, from system XYZ1.
2. John will be able to logon to XYZ1 with his XYZ1 password, and to XYZ2 with XYZ2 password.

Thanks.

Best Regards,

Nerijus.