1) Click "See inside" 2) Drag the six custom block definitions from the "Leaderboard" sprite into your Backpack 3) Navigate to your project 4) Drag the six custom block definitions out from your Backpack into a sprite 5) Make cloud lists called "Leaderboard scores" and "Leaderboard users" (without the quotes). The rest of the variables and lists will be created for you the first time you run the Simple Leaderboard Library's blocks.
