Applies to: Nova, Nova II, SuperNova II
Both questions are covered in depth in the help PDF “a guide to using the Supernova II Multitimbrally with a sequencer”.(Any references within this help PDF to 8 parts should be read as 6 parts for the Nova II).
The PDF can be found here: https://fael-downloads-prod.focusrite.com/customer/prod/s3fs-public/novation/downloads/25404/supernova2sequencer2.pdf