How do I install Powershell's IISAdministration Module

It turns out that the IISAdministration powershell module is a server feature.

With PowerShell you enable it with
Install-WindowsFeature web-mgmt-console

Or from the Server Manager GUI, under Server Roles, you select:
Web Server (IIS) -> Management Tools -> IIS Management Scripts and Tools

You can install that feature using a windows PowerShell console with elevated privileges (running it as administrator).

You can't install it from internet since it's within the IIS role of windows server, so you would need to install IIS 1st and then you can import it whenever you needed too.

So the step by step would be * Server manager/Add Roles and Features/Next/Role-based or feature-based installation/SelectYourserver/next

then next next next... and install.