Is it possible to do this in Vital? If not, maybe it would be cool for a feature request. I’d for one love to automate the envelope curves on my 16 steps LFO waves!
I don’t believe you can do this, i.e., modulate the curve elements between the points of the envelope.
You can see on the mod matrix what’s available wrt envelopes:
EDIT: Agree - would be nice to have
As Andrew has pointed out, it cannot be done “directly”.
Yet, you can modulate the power of an envelope modulation in the matrix, it’s not really the same thing, but for many possible scenarios, it might do the trick.