You are here because you have successfully downloaded & installed the screen recorder in Step 1.
Instructions:
1) Copying your code: Return to the page with the three steps (the one where you downloaded the screen recorder).
2) Click the Copy button: You should see a section with a code beginning with playbookux://. Copy this code by clicking the copy button. This code is unique to you.
A screenshot of what you should see when you click "copy".