you can handle menus from code or dragging & dropping in Access - using both methods on the same menu might cause some conflicts.
search the existing code for CommandBarto check for code generated menu stuff - if you find it, you should be able to understand/copy/paste/edit bits of the existing code to add your new menu item and it's action.
otherwise, here's a dragNdrop way:
right-click in any menu: Customize
in the resulting Customize dialog - Toolbars tab
and scroll down to the bottom: there you should find the existing custom menu/toolbar - check it to display it (if not already displayed).
still in the Customize dialog - Commands tab
drag last item from the left pane onto the menu (adds a new main menu-entry)
select File on the left and drag first item from the right pane into an existing main menu-entry (adds a menu subitem to exsting main menu-entry).
now right click your new menu item - Properties
in "On Action" of the resulting Properties window, type something meaningfull like mnuTest.
in a module, create a
Public Sub mnuTest()
that does whatever you want to happen when the user hits the menu.
currently using SS 2008R2