Update .config/mako/config

private_dot_config/mako/config

@@ -1,3 +1,4 @@
+max-history=15
 [mode=default]
 # things
 on-notify=exec paplay /usr/share/sounds/freedesktop/stereo/dialog-information.oga
@@ -36,16 +37,22 @@ border-color=#ca242480
 on-notify=exec paplay /usr/share/sounds/freedesktop/stereo/window-attention.oga
 border-color=#FF0000
 
-[app-name=wp-vol]
-height=50
-layer=overlay
-history=0
-anchor=center
-text-alignment=center
-
 [mode=do-not-disturb]
 invisible=1
 on-notify=none
 
 [mode=do-not-disturb app-name=wp-vol]
 invisible=0
+
+[app-name=wp-vol]
+layer=overlay
+history=0
+anchor=center
+# Group all volume notifications together
+group-by=app-name
+# Hide the group-index
+format=<b>%s</b>\n%b
+
+[app-name=volume group-index=0]
+# Only show last notification
+invisible=0