it would be use full if we could provide you with parameters to our specific environment. script below downloads the package from our environment and then installs the update only requirement is that a version of the client is already on the system.
Invoke-WebRequest 'https://download-lamresearch.goskope.com/dlr/win/get'-OutFile C:\temp\nsagent.msi
cd C:\Temp
Start-Process msiexec "/I nsagent.msi token=XXXXXXXXXXXXhost=addon-your-company.goskope.com mode=peruserconfig Autoupdate=on /qn" -Wait
Remove-Item C:\temp\nsagent.msi