The arguments that are utilized in the Accordion field:

Name	Type	Default	Description of argument
id	string		A unique ID. This ID is used to get the value
type	string	accordion	Type of the field
title	string		Title of the field
default	array		Default value from the database, if the option doesn’t exist.
subtitle	string		Subtitle to display below the title.
desc	string		Description to display after the field.
help	string		Text to display on the right-corner (as a hover/popup) of the field.
class	string		Extra CSS classes (space separated) to append to the field
before	string		Content to display before the field.
after	string		Content to display after the field.
dependency	array		Define field visibility depending on other field value.
attributes	array		Extra HTML attributes to append to the field.
sanitize	string		Callback function for sanitizing value.
validate	string		Callback function for validating value.
accordions	array		An associative array containing fields for the fieldsets.

There are two configuration examples in this documentation. The first is a simple accordion configuration and the second is an accordion example with associated default values.

Simple Accordion Field Example

array(
  'id' => 'example-accordion-1',
  'type' => 'accordion',
  'title' => 'Accordion Example',
  'accordions' => array(
    array(
      'title' => 'Accordion Tab One',
      'icon' => 'fa fa-heart',
      'fields' => array(
        array(
          'id' => 'example-text-1',
          'type' => 'text',
          'title' => 'Text',
        ),
      )
    ),
    array(
      'title' => 'Accordion Tab Two',
      'icon' => 'fa fa-gear',
      'fields' => array(
        array(
          'id' => 'example-color-1',
          'type' => 'color',
          'title' => 'Color',
        ),
      )
    ),
  )
),

Accordion Field Example with Default Values

array(
  'id' => 'example-accordion-2',
  'type' => 'accordion',
  'title' => 'Accordion Default Example',
  'accordions' => array(
    array(
      'title' => 'Accordion Tab One',
      'icon' => 'fa fa-heart',
      'fields' => array(
        array(
          'id' => 'example-text-1',
          'type' => 'text',
          'title' => 'Text',
        ),
        array(
          'id' => 'example-text-2',
          'type' => 'text',
          'title' => 'Text Two',
        ),
      )
    ),
    array(
      'title' => 'Accordion Tab Two',
      'icon' => 'fa fa-gear',
      'fields' => array(
        array(
          'id' => 'example-color-1',
          'type' => 'color',
          'title' => 'Color',
        ),
      )
    ),
  ),
  'default' => array(
    'example-text-1' => 'This is sample default data',
    'example-text-2' => 'Some additional default values',
    'example-color-1' => '#33ccdd',
  ),
),