How to Change Skype For Business SIP ADDRESS Using PowerShell

Powershell Cmdlet:
Set-CsUser –Identity <username> -SipAddress "<email address>"

1. Open Skype for Business Management Shell
2. Type the following cmdlet:
   Set-CsUser –Identity John.Doe -SipAddress "sip:John.Doe@Doe.com"
3. press <ENTER>