So xfce4-power-manager will be replaced by mate-power-manager for future ISO.
If you like to replace it now…
Remove xfce4-power-manager and desktop file from autostart
yay -Rc xfce4-power-manager
# Remove from autostart
rm ~/.config/autostart/xfce4-power-manager.desktop
Install mate-power-manager
yay -S mate-power-manager
# Copy to users autostart dir
cp /etc/xdg/autostart/mate-power-manager.desktop ~/.config/autostart/
Fix .desktop file:
sed -i '/OnlyShowIn/d' ~/.config/autostart/mate-power-manager.desktop
Fix settings menu super + s
sed -i 's/xfce4-power-manager-settings,xfce4-power-manager-settings/mate-power-preferences,mate-power-manager/g' ~/.config/mabox/settings.csv