Added separate EventManger for FixedUpdate.

Editor/PhysicsEventMangerEditor.cs

@@ -0,0 +1,34 @@
+using System;
+using UnityEditor;
+using UnityEngine;
+
+namespace Utils.Editor
+{
+    [CustomEditor(typeof(PhysicsEventManager), true)]
+    public class PhysicsEventManagerEditor : UnityEditor.Editor
+    {
+        public override void OnInspectorGUI()
+        {
+            Event("FixedUpdate", PhysicsEventManager.FixedUpdateLength, PhysicsEventManager.FixedUpdateDelegates);
+        }
+
+        private void Event(string title, int length, Delegate[] delegates)
+        {
+            {
+                GUILayout.BeginHorizontal();
+
+                GUILayout.Label(title, EditorStyles.boldLabel);
+                GUILayout.FlexibleSpace();
+                GUILayout.Label(length.ToString());
+
+                GUILayout.EndHorizontal();
+
+                if (length == 0) return;
+                foreach (var d in delegates)
+                {
+                    GUILayout.Label($"{d.Method.DeclaringType}.{d.Method.Name}", EditorStyles.miniLabel);
+                }
+            }
+        }
+    }
+}