Find the includes/admin/views/field-group-options.php file
Open it
Find in code
acf_render_field_wrap(array(
'label' => __('Style','acf'),
'instructions' => '',
'type' => 'select',
'name' => 'style',
'prefix' => 'acf_field_group',
'value' => $field_group['style'],
'choices' => array(
'default' => __("Standard (WP metabox)",'acf'),
'seamless' => __("Seamless (no metabox)",'acf'),
)
));
after line
‘seamless’ => __(“Seamless (no metabox)”,’acf’)
add new line
‘default closed’ => __(“Standard Collapsed”,’acf’)
Result
acf_render_field_wrap(array(
'label' => __('Style','acf'),
'instructions' => '',
'type' => 'select',
'name' => 'style',
'prefix' => 'acf_field_group',
'value' => $field_group['style'],
'choices' => array(
'default' => __("Standard (WP metabox)",'acf'),
'seamless' => __("Seamless (no metabox)",'acf'),
'default closed' => __("Standard Collapsed",'acf'),
)
));
Save.
Go to settings for any group field
Open “Style” list box
Select “Standard Collapsed”
Update
Have a fun