How to install Powershell cmdlets for ADFS Proxy on Windows 2012 R2 server

Hi;

I am configuring a AD FS Proxy (WAP) on Windows 2012 R2 server, the default https port is 443 and I want to use port 8443 instead of port 443 for the https traffic coming in from my 3rd party hosted cloud system.  My understand that I need to issue Set-ADFSProxyProperties -HttpsPort to change but when I issue this command, I got "The term 'Set-ADFSProxyProperties' is not recognized as the name of a cmdlet..."

This is a AD FS Proxy server, so I do not install the complete ADFS.  What can I do to install the PowerShell cmdlets for me to complete the following execution.

Get-ADFSProxyProperties

Set-ADFSProxyProperties

Thanks!

KW - CNE,MCSE,VCP5