Org-Unit Name>, --User <User Name; Leave --User <User Name> [--Force] - Dell DR4000 Reference Manual

If you have joined the ADS to a designated domain and you want to see the
users, enter the following command string at the system prompt to display
status:
administrator@mydr4000 > authenticate --show --users
administrator2
administrator
--join, --domain <domain name> --ou <org-unit name>, --user <user
name>
To join an ADS domain, enter the following command string at the system
prompt:
NOTE:
When attempting to join the ADS domain, the administrator password is
required for that domain to ensure that the join operation is successful.
administrator@mydr4000 > authenticate --join --domain
ads.storage.local --user administrator
Enter password for administrator@ads.storage.local:
Successfully joined domain ads.storage.local
Disabling NTP service... done.
Updated Windows Access Server Configuration.
Updated kerberos configuration.
Updated machine password.
Updated DNS.
Restarting Windows Access Server... done.
NOTE:
The --ou command is optional and allows for defining a specific
organizational group in the ADS that may require its own administrative access
rights (such as an executive management or finance group).
--leave --user <user name> [--force]
To leave an ADS domain, enter the following command string at the system
prompt:
administrator@mydr4000 > authenticate --leave --user
administrator
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Managing the DR4000 System