Aquatouch set up problems

  1. Where is the default Touch Bar? Like, where do I set up the initial icons I want to load when nothing else is open or Mac boots up?

  2. What is the icon name for 'Siri'? I typed Siri and still have a blank button

  3. Is it possible to add all the default macOS Touch Bar elements and just edit/add the bits I want? Like if I want to keep the macOS 'mail' icons but add something?

  4. Where do I edit the four permanent icons on the right ?