lycee_menu.xml

<odoo>
    <!-- menu root-->
    <menuitem name="Lycée" id="menu_lycee_root" sequence="1"/>
    <!-- Menu Agenda -->
    <menuitem parent="menu_lycee_root" name="Agenda" id="menu_agenda" action="iut_schedule_action" sequence="2"/>
    <!--  Menu Configuration  -->
    <menuitem parent="menu_lycee_root" name="Configuration" id="menu_configuration" sequence="3"/>
    <menuitem parent="menu_lycee_root" name="TEST" id="menu_test" sequence="4"/>
    <!--  Config/Options-->
    <menuitem parent="menu_configuration" id="menu_etudiants" name="Etudiants" action="iut_student_action" sequence="1"/>
    <menuitem parent="menu_configuration" id="menu_class" name="Classes" action="iut_class_action" sequence="2"/>
    <menuitem parent="menu_configuration" id="menu_course" name="Courses" action="iut_course_action" sequence="3"/>
    <menuitem parent="menu_configuration" id="menu_prof" name="Professeurs" action="res_partner_action_teacher" sequence="4"/>
</odoo>