Index: engine/engine.py
===================================================================
diff -u -r552cde1b884edc9f5fc7c1930b7cc39e3fd4bbe9 -r95c0bc77d05f227737bf6c8c8d510b9096ef7e4b
--- engine/engine.py	(.../engine.py)	(revision 552cde1b884edc9f5fc7c1930b7cc39e3fd4bbe9)
+++ engine/engine.py	(.../engine.py)	(revision 95c0bc77d05f227737bf6c8c8d510b9096ef7e4b)
@@ -77,27 +77,37 @@
             return False
 
         top_menu_name = "View"
-        sub_menu_name = name
+        menus = []
+        action_name = name
         names = name.split("/")
         if len(names) > 1:
+            menus = names[0:-1]
             top_menu_name = names[0]
-            sub_menu_name = names[1]
+            action_name = names[-1]
 
-        menu = None
-        if top_menu_name != "":
-            found = False
-            for item in self.menuBar.actions():
-                if item.text().replace('&', '').strip().lower() == top_menu_name.replace('&', '').strip().lower():
-                    menu = item.menu()
-                    found = True
-                    break
+        if len(menus) > 3:
+            print(f"WARNING: Maximum number of submenus (3) exceeded, not adding item \"{name}\"")
+            return False
 
-            if not found:
-                menu = self.menuBar.addMenu(top_menu_name)
+        def find_submenu(menu, submenu):
+            for action in menu.actions():
+                if action.text().replace('&', '').strip().lower() == submenu.replace('&', '').strip().lower():
+                    return action.menu()
+            return None
 
-        action = menu.addAction(sub_menu_name)
+        current_menu = self.menuBar
+        for submenu in menus:
+            next_menu = find_submenu(current_menu, submenu)
+            if next_menu == None:
+                next_menu = current_menu.addMenu(QtWidgets.QMenu(submenu, current_menu))
+                current_menu = next_menu.menu()
+            else:
+                current_menu = next_menu
+
+        action = current_menu.addAction(action_name)
         action.triggered.connect(lambda: self.__action_triggered(window))
         self.action_show_all.toggled.connect(action.setChecked)
+            
 
     def __action_triggered(self, window):
         if window.isVisible():