web/help_online/security/help_online_groups.xml

<openerp>
    <data>
        <record id="help_online_group_reader" model="res.groups">
            <field name="name">Help reader</field>
             <field name="category_id" ref="base.module_category_documentation"/>
        </record>
        <record id="help_online_group_writer" model="res.groups">
            <field name="name">Help writer</field>
            <field name="category_id" ref="base.module_category_documentation"/>
            <field name="implied_ids" eval="[
                                             (4, ref('help_online_group_reader')),
                                             (4, ref('base.group_website_publisher')),
                                            ]"/>
        </record>
    </data>
</openerp>