The Accordion Type field is used to group fields into accordion sections.

When editing a field group, be aware that all fields following the Accordion Type field (or until another Accordion Type field is defined) will be grouped using the Accordion Type field label as the Accordion Type heading.

Important Note: Accordion Addon for ACF is built on top of Advanced Custom Fields. This plugin requires an ACF plugin to function. Make sure you have ACF installed and activated.

Here’s a link to the documentation for the plugin. This will help you learn more about its features and how to use it.
Documentation
For any feedback or queries regarding this plugin, please contact our Support team.