partner-contact/partner_priority/views/res_partner.xml

<!-- Copyright 2019 Patrick Wilson <patrickraymondwilson@gmail.com>
     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->

<odoo>
    <record id="view_partner_form" model="ir.ui.view">
        <field name="name">partner.priority.form</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_partner_form"/>
        <field name="arch" type="xml">
            <field name="category_id" position="after">
                <field name="priority_id"
                       options="{'no_create': True, 'no_open': True}"/>
            </field>
        </field>
    </record>

    <record id="view_res_partner_filter" model="ir.ui.view">
        <field name="name">partner.priority.filter</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_res_partner_filter"/>
        <field name="arch" type="xml">
            <filter name="group_country" position="after">
              <filter name="group_priority"
                      string="Priority"
                      context="{'group_by': 'priority_id'}"/>
            </filter>
        </field>
    </record>
</odoo>