vracoop_click_and_collect/views/sale_order.xml

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

  <record id="view_order_form_with_retrait" model="ir.ui.view">
    <field name="name">delivery.sale.order.form.view.with_retrait</field>
    <field name="model">sale.order</field>
    <!-- <field name="inherit_id" ref="sale.view_order_form"/> -->
    <field name="inherit_id" ref="delivery.view_order_form_with_carrier"/>
    <field name="arch" type="xml">
        <data>
          <xpath expr="//div[@name='carrier_selection']" position="after">
              <field name="vracoop_point_retrait_id"/>
              <field name="day_retrait"/>
              <field name="hour_retrait" widget="float_time"/>
          </xpath>
        </data>
    </field>
  </record>
</odoo>