partner-contact/partner_deduplicate_acl/security/crm_deduplicate_acl_security.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- © 2016 Antiun Ingeniería S.L. - Jairo Llopis
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html). -->

<openerp>
<data>

<!-- New user group category -->
<record id="category" model="ir.module.category">
    <field name="name">Deduplicate Contacts</field>
</record>

<!-- New user groups -->
<record id="group_manually" model="res.groups">
    <field name="name">Manually</field>
    <field name="category_id" ref="category"/>
</record>

<record id="group_automatically" model="res.groups">
    <field name="name">Automatically</field>
    <field name="category_id" ref="category"/>
    <field name="implied_ids" eval="[(4, ref('group_manually'))]"/>
</record>

<record id="group_unrestricted" model="res.groups">
    <field name="name">Without restrictions</field>
    <field name="category_id" ref="category"/>
    <field name="implied_ids" eval="[(4, ref('group_manually'))]"/>
</record>

<!-- Respect previous behavior -->
<record id="base.group_system" model="res.groups">
    <field name="implied_ids" eval="[(4, ref('group_unrestricted'))]"/>
</record>

<!-- New permission for menuitem -->
<record id="crm.partner_merge_automatic_menu" model="ir.ui.menu">
    <field
        name="groups_id"
        eval="[(4, ref('group_manually'))]"/>
</record>

</data>
</openerp>