Hi,

To hide the member data from the template in your custom module in Odoo, you can override the template in your module and remove or comment on the parts related to displaying member data. Here's how you can do it:

<?xml version="1.0" encoding="utf-8"?>
<odoo>
<template id="course_sidebar_inherited" inherit_id="website_slides.course_sidebar" name="Course Sidebar (Custom)">
        <xpath expr="//tr[th='Members']" position="replace">
            <!-- Remove or comment out the member data -->
            <!-- <tr>
                <th>Members</th>
<td><t t-esc="channel.members_count"/></td>
            </tr> -->
        </xpath>
    </template>
</odoo>

Hope it helps