You can use two parameters off the New-ADuser
command:
-Server
-> Specifies the server or ad where the user should be create
-Credentials
-> To provide credentials of a user that is allowed to create the user (if the user running the script is not allowed to create the user in the domain)
Source: https://learn.microsoft.com/en-us/powershell/module/addsadministration/new-aduser?view=win10-ps
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Regards
Andreas Baumgarten