[Samba] Password Settings Objects (PSOs) precedence.

[Jason Long]

Hello,
 Is the definition of precedence mandatory? I found some examples in "https://dev.tranquil.it/samba/en/samba_advanced_methods/samba_password_policies.html" website with the difference precedence.

In below example, the policy applied to "domain admins". What other groups are available? 
# samba-tool domain passwordsettings pso apply "pso_domain_admins"  "domain admins"

Thank you.