pos/pos_to_weight_by_product_uom/demo/res_groups.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2017, Grap
     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->

<odoo>

    <record model="res.groups" id="uom.group_uom">
        <field name="users" eval="[(4, ref('base.user_admin'))]"/>
    </record>

</odoo>