How can I change registers
Can you explain a bit more? Is this about registering/activating the Dorico application? Or maybe something totally different, like, I don’t know, organ stops?
Octave shifting for existing notes:
Octave shifting during note input:
If this isn’t what you’re looking for, yes please can you say a bit more about what you want to achieve, what you’ve got at the moment, etc so we can understand the context.