clinic/netforce_clinic/layouts/clinic_menu.xml

<menu string="Clinic">
    <item string="Dashboard" action="clinic_board"/>
    <item string="Doctor" action="clinic_doctor"/>
    <item string="Nurse" action="clinic_nurse"/>
    <item string="Patient" action="clinic_patient"/>
    <item string="Visit" action="clinic_visit"/>
    <item string="HD Case Treatment" action="clinic_hd_case"/>
    <item string="Dialyzer" action="clinic_dialyzer"/>
    <item string="Settings">
        <item string="Clinic Setting" action="clinic_setting"/>
    </item>
</menu>