crm_lead_view.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

        <record model="ir.ui.view" id="view_crm_lead_lefilament">
            <field name="name">crm.lead.form.inherit</field>
            <field name="model">crm.lead</field>
            <field name="inherit_id" ref="crm.crm_case_form_view_leads"/>
            <field name="arch" type="xml">
                <xpath expr="//field[@name='referred']" position="before">
                    <field name="type_apporteur" />
                    <field name="apporteur" />
                </xpath>
            </field>
        </record>
</odoo>