Volume with squeezelite plugin

i have volumio installed on a pi4, raspdac mini from audiophonics, with isabre q2m.
I have installed squeezelite plugin to connect with LMS server on my nas.
My amp is smsl ad18.

My question is about volume settings.
In the plugin i have “hw isabre q2m”.
i can control volume with

  • volumio (and my raspdac)
  • squeezelite (and LMS)
  • my amp smsl ad18.

How do i have to manage all this?