How to get soundgroup which is in FMOD Studio?

I want to control all sounds volume and make a group in fmod studio
but I cant find a way to get this group in unity code.

Or is there anyother way to deel it?

In the FMOD API, a group is called a “bus”, so you can access the group using FMODUnity.RuntimeManager.StudioSystem.getBus, passing in the path of the group e.g “bus:/Music”.
You can get the name of the group by right clicking on it in FMOD Studio and selecting “Copy Path”, which will copy the correct name of the group to the clipboard.
After you get access to the bus, you can call setVolume on it to scale the volume up or down.