if working on a FLAT soffit pretty easy by drawing a custom profile in the banding library.
than offset the banding as needed to fit under the soffit
for a sloped soffit, not sure what the best way would be
i think toms thinking of creating a custom frieze profile might be one way.
didn't try that.
glenn mentions experimenting with "ceilings". also might work.
time for some experimenting
i tried doing it with a wall with a custom profile siding and had some issues
tom mentions a frieze, haven't tried that one
this is a good one. not sure it's as easy as it seem.
can't wait to see all the solutions.