How to set a menu under submenu of a menu

[kamal]

I have a main menu.then a submenu under a menuitem of a main menu.I want to set a submenu at a subitem of a submenu.how i can do this?

[svjard]

Well a menu is just a list of menuitems, so your submenu, whichever item you want to also have a submenu, it is the same process as setting the first submenu. Post some code or be a little more clear, it is an identical process.