diff --git a/src/killsw b/src/killsw
index e428176..803f492 100644
--- a/src/killsw
+++ b/src/killsw
@@ -3,22 +3,35 @@
 VERSION="1.0.1"
 
 cmd="$1"
+group="$2"
 
 case "$cmd" in
     stop)
-        systemctl stop killswitch.target
-        echo "Killswitch activated: all linked services have been stopped."
+        if [[ -n "$group" ]]; then
+            # Alleen die groep stoppen
+            systemctl stop "$group".target
+            echo "Killswitch activated: stopped group '$group'."
+        else
+            # Geen groep, alles stoppen
+            systemctl stop killswitch.target
+            echo "Killswitch activated: all linked services have been stopped."
+        fi
         ;;
     start)
-        systemctl start killswitch.target
-        echo "Killswitch deactivated: all linked services have been started."
+        if [[ -n "$group" ]]; then
+            systemctl start "$group".target
+            echo "Killswitch deactivated: started group '$group'."
+        else
+            systemctl start killswitch.target
+            echo "Killswitch deactivated: all linked services have been started."
+        fi
         ;;
     status)
         systemctl status killswitch.target
         ;;
     add)
         if [[ -n "$2" && "$3" == "to" && -n "$4" ]]; then
-            echo "Called add $2 to $4"
+            echo "Adding service '$2' to group '$4'..."
         else
             echo "Usage: killsw add [service] to [group]"
         fi