I got a 03R/W.
As I understand it there is not a big difference between these synths.
If you are talking about midi channels, sorry, it is not possible. You can assing one global effect to the multisound.
This is not odd, it is very common, in fact, because of the complexity it is not economical satisfacory to do so.
Well I don´t know if it works differently on the 01W, but that is what I know.
Good luck.