partner-contact/partner_contact_role/views/res_partner.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2018 Camptocamp
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->

<odoo>

  <record model="ir.ui.view" id="view_partner_form_role">
    <field name="name">Partner form with roles</field>
    <field name="model">res.partner</field>
    <field name="inherit_id" ref="base.view_partner_form"/>
    <field name="arch" type="xml">
      <field name="function" position="after">
        <field name="role_ids" widget="many2many_tags" attrs="{'invisible': [('is_company','=', True)]}"/>
      </field>
    </field>
  </record>

</odoo>