flectra/addons/l10n_mx/views/res_config_settings_views.xml

<?xml version="1.0" encoding="utf-8"?>
<flectra>
    <record id="res_config_settings_view_form" model="ir.ui.view">
        <field name="name">res.config.settings.view.form.inherit.l10n.mx</field>
        <field name="model">res.config.settings</field>
        <field name="inherit_id" ref="account.res_config_settings_view_form"/>
        <field name="arch" type="xml">
            <xpath expr=".//div[@id='invoicing_settings']" position="inside">
                <div class="col-xs-12 col-md-6 o_setting_box">
                    <div class="o_setting_left_pane">
                        <field name="module_l10n_mx_edi" class="oe_inline" widget="upgrade_boolean"/>
                    </div>
                    <div class="o_setting_right_pane">
                        <label for="module_l10n_mx_edi"/>
                        <div class="text-muted">
                            Create your electronic invoices automatically (CFDI format)
                        </div>
                    </div>
                </div>
            </xpath>
        </field>
    </record>
</flectra>