Thanks Bill...the bell has rung clearly.

I wonder if Korg's PA operates in much the same manner, as I think this type of voice assignment (divisi) is what Diki referred to in his original post.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.