gistfile1.scala

   val MustBeAdmin = If(() => User.superUser_?, "")

   val entries = List(Menu("Home") / "index" >> LocGroup("main"),
     Menu("Page 3") / "page3" >> LocGroup("main") >> PlaceHolder submenus (
         Menu("Page 3a") / "page3a" ,  
         Menu("Page 3b") / "page3b" ,
         Menu("Page 3c") / "page3c",
         Menu("Admin 4") / "admin4" >> MustBeAdmin ),
     Menu("Admin") / "dummyAdmin" >> MustBeAdmin >> LocGroup("main") >> PlaceHolder submenus (
         Menu("Admin 1") / "admin1" ,  
         Menu("Admin 2") / "admin2" ,  
         Menu("Admin 3") / "admin3"   
         ),