IIS on W7: restrict access to local user and helpdesk (Powershell)

Hi,

I'd like to run a health check report on a W7 computer on a daily basis and therefore run an IIS to show it.

However, I’d need to restrict access to local user and helpdesk-group. How can I do this (I’d need to do this automated so Powershell would be needed).

Please advise.
J.