Google is not a bad way to research for such things, but its certainly not the best way either.
Torpedoes were able to be dropped singularly where two were carried and the heavy bomb pylons were able to be fused and dropped separately also.
I know this picture isn't relevant to BoB SoW As this is a He111H-6
But it shows the point that payloading should be looked at correctly .
IL2 1946 dropping ordnance ie: 2 x SC 250/500's out of a bomb drop of 4 x SC 250/500 should be configured for BoB SoW so you get 4 x SC 250/500 single drops or where the relevant payloads are applicable.
Now Im not sure what BoB SoW will exactly have when its first out and later additions, but I hope my question is relevant to their payload configuration.
Regards