whatsapp_web_groups/helpdesk_extras/views/snippets/snippets.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

<!-- Add Helpdesk Hours snippet to snippets menu in Categories -->
<template id="snippets" inherit_id="website.snippets">
    <xpath expr="//snippets[@id='snippet_structure']//t[@t-snippet='website.s_embed_code']" position="before">
        <t t-snippet="helpdesk_extras.s_helpdesk_hours"
           string="Helpdesk Hours Available"
           group="content"
           t-thumbnail="/website/static/src/img/snippets_thumbs/s_progress_bar.svg"
           t-image-preview="/website/static/src/img/snippets_thumbs/s_progress_bar.svg">
            <keywords>helpdesk, hours, available, tickets, progress, bar, prepaid, credit, portal</keywords>
        </t>
    </xpath>
</template>

</odoo>