Note: you must have Java installed in order to run the included .jar file!
How to install: make sure to unzip the downloaded file on your default Downloads folder, then navigate to the .msi file and double-click on it. Once installed, you will need to open up the .jar file, copy both the name and license key, open up Charles 4.6.2, hover the cursor to the Help menu button, click on Register Charles, then paste in the name and License key.
Enjoy!