account_security.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data noupdate="0">
        <record model="ir.module.category" id="idg_letter">
            <field name="name">E-Office Letter Management</field>
            <field name="description">E-Office Letter Management</field>
            <field name="sequence">11</field>
        </record>
        <record id="group_idg_letter_user" model="res.groups">
            <field name="name">User</field>
            <field name="category_id" ref="idg_letter"/>
        </record>

        <record id="group_idg_letter_admin" model="res.groups">
            <field name="name">Administrator</field>
            <field name="category_id" ref="idg_letter"/>
            <field name="implied_ids" eval="[(4, ref('group_idg_letter_user'))]"/>
            <field name="users" eval="[(4, ref('base.user_root')), (4, ref('base.user_admin'))]"/>
        </record>

    </data>
</odoo>