The first function that we'll be creating will be used to set the default values for our configurations. Add this function to the script:

public void SetDefaults()
{
  SetBG(1.00f);
  SetSFX(0.80f);
  SetAtm(0.60f);
  SetAudioType("Stereo");
}

In this function, we call the functions that we'll be creating next to set the default values. For the first three functions, we set the volumes for various values. The last function sets the speaker mode to a stereo default.

Now, we'll be adding the functionality to change the volumes. Add these functions to your script:

public void SetBG(float bgVolume)
{
  AudioSource[] audios = GameObject.FindObjectsOfType<AudioSource>();
    
  foreach...