mrp_bom_sale_eiru/security.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
      <data noupdate="1">
          <record id="sale_mrp_bom_group" model="res.groups">
              <field name="name">Allows to define a BOM on sale order lines</field>
              <field name="category_id" ref="base.module_category_hidden"/>
          </record>
        </data>
  </openerp>