delivery_carrier_views.xml

<?xml version="1.0" encoding="utf-8" ?>
<!--
Copyright 2020 Trey, Kilobytes de Soluciones
License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
-->
<odoo>
    <record id="view_delivery_carrier_form" model="ir.ui.view">
        <field name="model">delivery.carrier</field>
        <field name="inherit_id" ref="delivery.view_delivery_carrier_form" />
        <field name="arch" type="xml">
            <xpath expr="//field[@name='integration_level']" position="after">
                <field
                    name="price_method"
                    attrs="{'invisible': [('delivery_type', 'in', ['fixed', 'base_on_rule'])], 'required': [('delivery_type', 'not in', ['fixed', 'base_on_rule'])]}"
                />
            </xpath>
            <xpath expr="(//page)[1]" position="before">
                <page
                    string="Pricing"
                    attrs="{'invisible': [('delivery_type', 'in', ['fixed', 'base_on_rule'])]}"
                >
                    <group attrs="{'invisible':[('price_method', '!=', 'fixed')]}">
                        <group>
                            <field name="fixed_price" />
                        </group>
                    </group>
                    <group
                        name="general"
                        attrs="{'invisible':[('price_method', '!=', 'base_on_rule')]}"
                    >
                        <field name="price_rule_ids" nolabel="1" />
                    </group>
                </page>
            </xpath>
        </field>
    </record>
</odoo>