Open the Crowd Control Desktop App
Select Castlevania II: Belmont's Revenge from the game list
Follow the Auto Setup checklist (left side of the app). The app will help you set up BizHawk.
You will need a USA Game Boy ROM. The app patches it automatically during setup.
Effects can only be tested after pressing "Start Session" in the app
Always test a few effects before going live
Skipping this can lead to broken streams and confusion!
Requires the USA release of Castlevania II: Belmont's Revenge for Game Boy
The app patches your ROM automatically during setup. Nothing extra to install.
Crowd Control does not provide ROM files
Before you can play Game Boy games with Bizhawk, import a legally obtained Game Boy BIOS: Config > Firmwares. Find GB, right-click and Set Custom, then browse to your BIOS. Relaunch Bizhawk or reopen it from the CC app.
Tested with BizHawk 2.9.1 (Gambatte core)