How to create an Accordion Component in sightly AEM 6.4
You can create accordion component as a normal component with additional css/js to hide accordion details on load and show on click.
You may add cq:editconfig to refresh page on afterinsert, afterdelete, after move etc.
CQ5 Sightly Accordion component - Stack Overflow
Building an Accordion Component in Adobe CQ5 - Jenikya's Blog
Thanks Arun for your quick response