I\'m using the final version of Xcode 10 on macOS Mojave beta 11. I downloaded the Additional Tools for Xcode 10 package from Apple\'s website.
When I try to install the
Update on the answer June 2019 Xcode 10.2
Apple has moved Network Link Conditioner Tool to additional tools for Xcode
Go to the below link
https://developer.apple.com/download/more/?q=Additional%20Tools
Install the dmg file, select hardware from installer
select Network Link conditioner prefpane