Drop the emitter in the world, then with matinee open add a new particle track to Matinee. Assign that emitter to that track and now you should be able to toggle it on and off or just trigger it once right in matinee. Hope this helps!
Drop the emitter in the world, then with matinee open add a new particle track to Matinee. Assign that emitter to that track and now you should be able to toggle it on and off or just trigger it once right in matinee. Hope this helps!