Start Remote Assistance in Windows from the Command Line. You can also request help or offer your skills as an expert.
"%windir%\system32\msra.exe" /offerra
"%windir%\system32\msra.exe" /novice
"%windir%\system32\msra.exe" /expert
Usage
Create a shortcut and enter first command line, shown above, as the target. Remember to elevate/run as if you are using differenced user accounts