Caution
This project is an unofficial, third-party, independent of Voicemeeter. It is not affiliated with, endorsed by, or in any way officially connected to VB-Audio Software or any of its subsidiaries or affiliates.
Script that "hooks" the windows volume slider to Voicemeeter. So when you change the windows volume it will change the selected slider in Voicemeeter. Its customizable with options select which strips/buses to be assigned.
Based on voicemeeter-api by Onyx and Iris
Note
Tested on Potato 3.1.2.2