Press F9 to edit a scene's links, which describe the signal flow.

With the scene button you can also configure link presets that can be changed either manually from the menu, or with Scripts or Markers.

Turbo Play links all the tracks automatically. In case you want to customize the linking, you can use the F9 editor.
When you replace the ASIO driver, Turbo Play will relink the tracks based on the new configuration.