CONNECTING TO THE POWERSHELL ACCESS TO ARS SERVER
Connect-QADService -Service ars01.domain.com -Proxy
from here you can use Powershell to connect to ARS and and do what ever you like.
examples:
$All-EmployeeSearch = Get-QADUser -Searchroot 'Configuration/Managed Units/UserAccountInformation/All-EmployeeSearch' -IncludeAllproperties | Select-Object DisplayName,SamAccountName,Description
Set-QADUser $user.SamAccountName -ObjectAttributes @{Virtual_Attribute_Test_Happy="Very"}