Use the ‘grouped’ volume control to set them all to zero/muted, then you can adjust it up from there, and they’ll stay aligned to each other.
I have used it his procedure exactly once, but now have EP realized that once I’ve done the ‘micromanagement’ process, I want to keep it that way, and just use the ‘grouped’ volume slider to increase or decrease all speakers, maintaining their ‘micromanaged’ relative volumes.
