<?xml version="1.0"?>
<xpath expr="//button[@id='w_visitor_visit_counter']" position="before">
                <button name="486" type="action" class="oe_stat_button" icon="fa-star" groups="sales_team.group_sale_salesman" attrs="{'invisible': [('lead_count', '=', 0)]}">
                    <field name="lead_count" widget="statinfo" string="Leads"/>
                </button>
            </xpath>
        