Is there any way to write on one staff simultanious 8th (or 16th, etc) notes with the stems and beaming for one melodic line pointed up and stems and beams for the other line pointed down?
NWC does not currently support true dual-voice staff arrangements. You cannot have more than one beam, slur, or independent voice at any particular position in a staff. This would require two staves at the moment.
I hope this helps.
Eric, support@noteworthysoftware.com