Thanks. I am running X3 Professional, and of course I know the EDIT/LAYOUT/ setting of clef, (setting it for the track). The setting of a different clef at some place later, is my problem, which I failed to explain properly. You are telling me that this is not available in Sonar SV. A major fault, I may change to other DAW, where it is available.
I questioned Cakewalk service 8 days ago about this, no answer yet, but they had a big sales drive to upgrade to Platinum. Maybe better sales policy would be to improve service?