account-financial-tools/account_permanent_lock_move/views/res_config_view.xml

<odoo>
    <record id="res_config_settings_view_form" model="ir.ui.view">
        <field name="model">res.config.settings</field>
        <field name="inherit_id" ref="account.res_config_settings_view_form"/>
        <field name="arch" type="xml">
            <div id="fiscalyear" position="attributes">
                <attribute name="invisible">0</attribute>
            </div>
            <div id="fiscalyear" position="inside">
                <label for="permanent_lock_date"/>
                <field name="permanent_lock_date" readonly="1"/>
                <div>
                    <button type="object" name="change_permanent_lock_date" string="Permanently Lock Entries" class="btn-primary"/>
                </div>
            </div>
        </field>
    </record>
</odoo>