contract/contract_transmit_method/views/contract_contract.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2020 ACSONE SA/NV
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->

<odoo>

    <record model="ir.ui.view" id="contract_contract_form_view">
        <field name="model">contract.contract</field>
        <field name="inherit_id" ref="contract.contract_contract_form_view"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='invoice_partner_id']" position="after">
                <field name="transmit_method_id"/>
            </xpath>
        </field>
    </record>

    <record model="ir.ui.view" id="contract_contract_search_view">
        <field name="model">contract.contract</field>
        <field name="inherit_id" ref="contract.contract_contract_search_view"/>
        <field name="arch" type="xml">
           <xpath expr="//field[@name='pricelist_id']" position="after">
                <field name="transmit_method_id"/>
            </xpath>
        </field>
    </record>


</odoo>