odoo16/addons/website_event/views/event_menus.xml

<?xml version="1.0"?>
<odoo><data>

    <menuitem id="menu_website_event_menu"
        name="Website Menus"
        action="website_event_menu_action"
        parent="event.menu_event_configuration"
        groups="base.group_no_one"
        sequence="99"/>

</data></odoo>