GOLEM/golem_member_account/views/golem_member_views.xml

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

<!--
Copyright 2017 Fabien Bourgeois <fabien@yaltik.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->

<odoo>
  <data>
    <!-- Forms -->
    <record model="ir.ui.view" id="golem_member_account_form_inherit_golem_member">
      <field name="name">GOLEM Member account Form</field>
      <field name="model">golem.member</field>
      <field name="inherit_id" ref="golem_member.golem_member_form" />
      <field name="arch" type="xml">
        <div class="oe_title" position="after">
          <div class="oe_button_box" name="button_box">
            <button type="object" class="oe_stat_button" id="invoice_button"
              icon="fa-pencil-square-o" name="open_partner_invoices"
              attrs="{'invisible': [('free_member', '=', True)]}"
              context="{'default_partner_id': active_id}">
              <div class="o_form_field o_stat_info">
                <span class="o_stat_value">
                  <field name="total_invoiced" widget='monetary' options="{'currency_field': 'currency_id'}"/></span>
                <span class="o_stat_text">Invoiced</span>

              </div>
            </button>
          </div>
        </div>
        <field name="season_ids" position="before">
          <field name="state_last_invoice" />
        </field>

      </field>
    </record>

  </data>
</odoo>