Not a question, but hopefully others can benefit from what I learned to make it work.
Result: you can use the XY pad for Expression and Dynamics, and Pressure and Slide for Vibrato Intensity and Rate respectively.
In Roli Dashboard, make changes according to the screenshot.
In Ableton Live 11, add Kontakt and make changes according to screenshot.
In Kontakt, load the attached multi
Note: Mapping of the CC numbers to the Viola and Cello is not done yet.