If I create a configurator with multiple pages is there a way with a button to be able to jump to alternative pages instead of using the navigation bar at the top?
Not that I am aware of. Whether or not you can get a reference to the native next and previous buttons like you can for buttons in a customization I haven’t tried. If you could you would be able to execute a button.click from a button of your own creation.
You can control which page they go to when they click the next and previous page buttons though. So under x condition they would go to page 3 from page 5, under condition y go to page 2 from page 5.