Change volume of players while ingame

I would like to have a tool (Makro / Shortcut) to change the volume of the users in my discord channel while I'm in the game.

The advantage is that for a short time I can put a better focus on the game without "Tab-Out" the game. Also you could fine-tune the audio environment without having to constantly leave the game ("Out-tabbed"/minimzed).

It would be nice to have this feature for at least 10 users/channel.

(Standard Hotkey could be F1...F10 + "+" / "-" on Num)

In this case an "all mute"-Mode could be also good.