reporting-engine/report_xml/views/ir_actions_report_view.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo>
    <record id="ir_actions_report_view_form_report_xml" model="ir.ui.view">
        <field name="name">ir.actions.report.view.form.report.xml</field>
        <field name="model">ir.actions.report</field>
        <field name="inherit_id" ref="base.act_report_xml_view" />
        <field name="arch" type="xml">
            <button name="associated_view" position="attributes">
                <attribute name="attrs">{
                    'invisible': [
                        ('report_type', 'not in', ('qweb-pdf', 'qweb-html', 'qweb-text', 'qweb-xml')),
                    ],
                }</attribute>
            </button>
            <xpath expr="//page[@name='advanced']/group" position="after">
                <group
                    name="xml_reports"
                    string="XML Rreport Settings"
                    attrs="{
                        'invisible': [
                            ('report_type', '!=', 'qweb-xml')
                        ],
                    }"
                >
                    <field name="xsd_schema" />
                    <field name="xml_encoding" />
                    <field name="xml_declaration" />
                </group>
            </xpath>
        </field>
    </record>
</odoo>