diff --git a/src/components/trials/wizard/WizardInterface.tsx b/src/components/trials/wizard/WizardInterface.tsx
index 1c07086..8088833 100755
--- a/src/components/trials/wizard/WizardInterface.tsx
+++ b/src/components/trials/wizard/WizardInterface.tsx
@@ -600,6 +600,13 @@ export const WizardInterface = React.memo(function WizardInterface({
         setCompletedActionsCount(0);
         setCurrentStepIndex(targetIndex);
         setLastResponse(null);
+
+        // Mark source step as completed so it won't be revisited
+        setCompletedSteps((prev) => {
+          const next = new Set(prev);
+          next.add(currentStepIndex);
+          return next;
+        });
         return;
       }
     }
diff --git a/src/lib/ros/wizard-ros-service.ts b/src/lib/ros/wizard-ros-service.ts
index 389e8c0..e20c4b8 100644
--- a/src/lib/ros/wizard-ros-service.ts
+++ b/src/lib/ros/wizard-ros-service.ts
@@ -504,6 +504,27 @@ export class WizardRosService extends EventEmitter {
         await new Promise((resolve) => setTimeout(resolve, 1000));
         break;
 
+      case "move_arm":
+        const arm = String(parameters.arm || "right");
+        const prefix = arm.toLowerCase() === "left" ? "L" : "R";
+        this.publish("/joint_angles", "naoqi_bridge_msgs/JointAnglesWithSpeed", {
+          joint_names: [
+            `${prefix}ShoulderPitch`,
+            `${prefix}ShoulderRoll`,
+            `${prefix}ElbowYaw`,
+            `${prefix}ElbowRoll`,
+          ],
+          joint_angles: [
+            Number(parameters.shoulder_pitch) || 0,
+            Number(parameters.shoulder_roll) || 0,
+            Number(parameters.elbow_yaw) || 0,
+            Number(parameters.elbow_roll) || 0,
+          ],
+          speed: Number(parameters.speed) || 0.3,
+        });
+        await new Promise((resolve) => setTimeout(resolve, 1000));
+        break;
+
       case "emergency_stop":
         this.publish("/cmd_vel", "geometry_msgs/Twist", {
           linear: { x: 0, y: 0, z: 0 },