Use keys 1-6 to change stages. Use key 'm' to change the mode from Watching Mode (it automatically creates fireworks) to Clicking Mode! (you click where you want a firework to be)
Thanks to @griffpatch for this! If you hear a bang but there's no firework, it's because it spawned inside a solid block. You might need to click to start the Watch Mode once the variable is already on "Watch".
