Firstly, visit https://jamworks.com/ and click on 'Sign up' to register an account. We'll just need a few details - your email address, and your name.

This will guide you through the registration process, and once you're done, you'll land on the 'Download widget' page. Select the 'Download for Mac' button.

This will start downloading the file. Once it's finished downloading, click on the file to start installing the software.

Once downloaded, you will see the Jamworks Widget file in your downloads folder. Double click to open the file and an installation window will appear.

Drag the Jamworks icon into your applications folder and follow the installation steps.

That's it, installation done. The first time you open the Jamworks Widget you'll just need to log in with the details that you used to register.