contract/agreement_fsm/views/fsm_order_view.xml

<?xml version="1.0"?>
<odoo>
    <!-- Copyright 2018 Open Source Integrators
         License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl). -->

    <!-- Fields Service Orders Form View -->
	<record id="fsm_order_agreement_form" model="ir.ui.view">
        <field name="name">fsm.order.agreement.form</field>
        <field name="model">fsm.order</field>
        <field name="inherit_id" ref="fieldservice.fsm_order_form"/>
        <field name="arch" type="xml">
            <field name="fsm_location_id" position="after">
                <field name="agreement_id"/>
            </field>
        </field>
    </record>
</odoo>