The official doc is here:Chocolatey Software | Installing Chocolatey

But I can't understand the Step one.
What should I do then?

The original PS is written :
Code:
Set-ExecutionPolicy Bypass -Scope Process -Force; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
And what should I modify it? Thanks a lot.