Copy dunst folder to ~/.local/share/
cp -r dunst ~/.local/share
Install package need, if you are using pipeware you must install pipewire-alsa pipewire-pulse
#Debian, Ubuntu, Kali
apt-get install alsa-utils libnotify-bin
#Alpine
apk add alsa-utils libnotify
#Arch Linux
pacman -S alsa-utils libnotify
#CentOS
yum install alsa-utils libnotify
#Fedora
dnf install alsa-utils libnotify
/path/to/volume.sh up to increase the volume
/path/to/volume.sh down to decrease the volume
/path/to/volume.sh mute to mute the volume
/path/to/volume.sh mute-mc to mute/unmute mic
Or bind the desired functionality to your key combination of choice.