In depth info on commands and their required permissions is on the GitHub.
For any issues or if in need of support, join The Bakery
Create your own firework shows, or... Launch a firework when giving a reward, level-ups, anything!
Note: This is a tool meant for server owners/administrators to have the ability of launching custom fireworks with a single command; whether it be as an addition in other plugins, or creating firework shows. I do not recommend giving normal players the ability to have access to fireworky commands as the fireworks menu is shared between everyone.
Creating fireworks
You can open the firework editing menu using /fireworky|fwy