partner-contact/partner_deduplicate_acl/views/base_partner_merge_view.xml

<?xml version="1.0" encoding="utf-8" ?>
<!-- Copyright 2016 Tecnativa - Jairo Llopis
     Copyright 2016 Tecnativa - Vicent Cubells
     Copyright 2017 Tecnativa - Pedro M. Baeza
     Copyright 2019 Tecnativa - Victor M.M. Torres
     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html). -->
<odoo>
    <menuitem
        id='base_tools'
        name='Tools'
        parent='contacts.menu_contacts'
        sequence="24"
    />
    <menuitem
        id='partner_merge_automatic_menu'
        action='base.action_partner_deduplicate'
        groups='group_automatically'
        parent='base_tools'
    />
</odoo>