Define a New Group in XML
Create an XML file in your custom module, e.g., security/user_groups.xml.

Specify the category_id for the "Other" Tab
The "Other" tab usually has a category already created by Odoo. You’ll want to link your new group to the same category.

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record id="group_new_feature" model="res.groups">
        <field name="name">New Feature Access</field>
        <!-- This will display the group in the "Other" tab -->
        <field name="category_id" ref="base.module_category_hidden"/>
    </record>
</odoo>

Include the XML File in Your Module

Add your XML file to the module’s __manifest__.py:

'data': [
    'security/user_groups.xml',
],