Presets that will change volume to a scpecific percantage you define for every person in one click

Presets that will change volume to a scpecific percantage you define for every person(100% by default), so you don't need to change all their volumes back and forth while you playing different games or doing other activities that require changes of volume sometimes. As we play in group of 5-9 people, it's pretty annoying to change all voices up and down as they need different decrease/increase percentage to sound normal. Also could be nice to have keybindings on those presets