path: root/addons/uom/security/uom_security.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
<data noupdate="0">
    <record id="group_uom" model="res.groups">
        <field name="name">Manage Multiple Units of Measure</field>
        <field name="category_id" ref="base.module_category_hidden"/>
    </record>
</data>
</odoo>