How to change "specify intranet microsoft update service location" group policy with powershell

Question

I am trying to change a group policy via a PowerShell script. I understand that group policies are basically just registry keys, and you can change the underlying registry values to edit the policies. I need to change two policies for "Change Automatic Updates" and "specify intranet Microsoft update service location" I was able to find the key for the first group policy

'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate\AU'

But the second policy is confusing me how do I set the intranet update service and intranet statistic server pragmatically with this key??

HKLM\Software\Policies\microsoft\Windows\Windowsupdate