Some commenters have suggested that I left some important things out of the Multishot video.
1. BLHeli Multishot is experimental, beta software. If you use it, there is a better than normal chance that you will burn your ESCs, especially if you are running on F330 ESCs, and at 4 kHz motor update rates.
2. If you do not modify your pid_process_denom from the betaflight default, there is not actually any performance advantage to running multishot over oneshot anyway.