Hi Karen,
It looks like that portion of the menu is being generated by a custom widget (Nerds Menu Area), you’ll need to get in touch with the developers and ask how to remove those items.
Regards,
Tom
Thanks for your quick response, Tom. I’ll get in touch with the developers.
If it’s helpful to anyone, I used the parameter “depth” for the function wp_list_pages to control the level of submenu in the custom widget. Of course, thanks to Tom for pointing out the custom widget.