Added Observation Scene to show the Replay

Assets/Samples/Cinemachine/3.1.3/Shared Assets/Scripts/LockPosZ.cs

@@ -0,0 +1,16 @@
+using UnityEngine;
+
+namespace Unity.Cinemachine.Samples
+{
+    public class LockPosZ : MonoBehaviour
+    {
+        public float ZPosiion;
+
+        void LateUpdate()
+        {
+            var pos = transform.position;
+            pos.z = ZPosiion;
+            transform.position = pos;
+        }
+    }
+}