Please tell me how to set up Audio Bus.

In the Sound Database, you can register SE, BGM, and VOICE. Does registering each appropriately separate them into different Buses, or is it necessary to pre-register the desired Bus in the default Bus Layout?

Also, how can I add a Bus other than the ones mentioned above?

How can I play a positional sound using Godot’s AudioStreamPlayer2D?

I would like to prepare a UI that allows volume adjustment for each Bus as an options menu, but is such a menu not provided by default?

Currently, there does not appear to be a feature to specify buses for SE, BGM, and VOICE. I will register this as a request.

If you wish to use it, you can utilize Godot’s native AudioStreamPlayer or AudioStreamPlayer2D.

This involves handling the playback/stop of each AudioPlayer using the “Change Object Property” action. The same approach applies if you want to play positional sound using AudioStreamPlayer2D. You would set an AudioListener2D on the Player object, place the AudioStreamPlayer2D at the desired location, and operate it via the “Change Object Property” action as needed.

I would like to prepare a UI that allows volume adjustment for each Bus as an options menu, but is such a menu not provided by default?

I apologize, but since it is not provided by default, you will need to create it using GDScript.

It seems that the Bus-related functionality currently needs to be implemented manually. Thank you. I understand.