docx_report_generation/wizard/res_partner_contract_wizard.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

    <record id="res_partner_contract_wizard_view" model="ir.ui.view">
        <field name="name">Contract print wizard</field>
        <field name="model">res.partner.contract.wizard</field>
        <field name="arch" type="xml">

            <form>

                <group>
                    <group name="requisites" string="Requisites">
                        <field name="partner_id" string="Partner" readonly="1"/>
                        <field name="company_id" string="Seller" readonly="1"/>
                    </group>
                    <group name="terms" string="Delivery and payment terms">
                        <field name="payment_terms"/>
                        <field name="delivery_terms"/>
                    </group>
                    <group string="Contract values" colspan="4">
                        <field name="transient_field_ids">
                            <tree editable="1" create="0" delete="0">
                                <field name="name"/>
                                <field name="value"/>
                                <field name="description" invisible="1"/>
                                <field name="technical_name" invisible="1"/>
                            </tree>
                        </field>
                    </group>
                </group>

                <button string="Create a document" type="object" name="get_docx_contract" />
                
                <footer/>

            </form>
        </field>
    </record>

</odoo>