res_users.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>   
        <record id="view_users_form" model="ir.ui.view">
            <field name="name">res.users.form</field>
            <field name="model">res.users</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="base.view_users_form"/>
            <field name="arch" type="xml">
                <xpath expr="//page[@string='Access Rights']" position="after">
                    <page string="SAML">
                        <group>
                            <field name="saml_provider_id"/>
                            <field name="saml_uid"/>
                        </group>
                    </page>
                </xpath>
            </field>
        </record>
    </data>
</openerp>