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
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html). -->
<odoo>
    <menuitem id='root_menu' name='Tools' parent='base.menu_base_partner' sequence="25"/>
    <menuitem id='partner_merge_automatic_menu'
              action='crm.action_partner_deduplicate'
              groups='group_automatically'
              parent='root_menu'
    />
</odoo>