HP CIFS Server 3.0a Administrator's Guide version A.02.01

Securing HP CIFS Server
Security Protection Methods
Chapter 12230
server. You can configure the admin users parameter to provide
administration capabilities only to the users listed with this parameter,
to restrict its use.
For example, you can configure the valid users option in the
smb.conf file as follows:
[global]
valid users = @smbusers, jack
This restricts all server access to either the user, jack, and to members
of the system group, smbusers.