partner-contact/partner_multi_relation_tabs/demo/res_partner_tab_demo.xml

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

    <record id="tab_committee" model="res.partner.tab">
        <field name="code">committee</field>
        <field name="name">Government committee</field>
        <field name="contact_type">c</field>
        <field name="partner_category_id" ref="category_government" />
    </record>

    <record id="tab_board" model="res.partner.tab">
        <field name="code">board</field>
        <field name="name">Company executive board</field>
        <field name="contact_type">c</field>
    </record>

    <record id="tab_positions" model="res.partner.tab">
        <field name="code">positions</field>
        <field name="name">Positions held</field>
        <field name="contact_type">p</field>
        <field name="partner_category_id" ref="category_functionary" />
    </record>

    <!-- Tab that will only be shown on our own main company partner. -->
    <record id="tab_departments" model="res.partner.tab">
        <field name="code">departments</field>
        <field name="name">Our departments</field>
        <field
            name="partner_ids"
            eval="[(6,0,[ref('base.main_partner')])]"
            />
    </record>

</odoo>