How to add accordions to group fields ?

You can read about nested fields here: https://www.wpallimport.com/documentation/addon-dev/nested-fields/

this doesnt work for field type accordion

$epl_wpimport->add_field(
	        'property_location',
	        'Property Location',
	        'accordion',
	        array(
	                'enter_address' => array(
	                        'Enter Address',
	                        $epl_wpimport->add_field( 'property_address', 'Property Address', 'text' )
	                ),
	                'enter_coordinates' => array(
	                        'Enter Coordinates',
	                        $epl_wpimport->add_field( 'property_coordinates', 'Property Coordinates', 'text' )
	                ),
	        )
	);

Please provide any sample usage to group fields in accordion

There is no field type ‘accordion’. You can nest fields in a number of ways and we have examples of doing so here: https://www.wpallimport.com/documentation/addon-dev/nested-fields/

If you change ‘accordion’ to ‘radio’, your code will work:

$epl_wpimport->add_field(
	'property_location',
	'Property Location',
	'radio',
	array(
	        'enter_address' => array(
	                'Enter Address',
	                $epl_wpimport->add_field( 'property_address', 'Property Address', 'text' )
	        ),
	        'enter_coordinates' => array(
	                'Enter Coordinates',
	                $epl_wpimport->add_field( 'property_coordinates', 'Property Coordinates', 'text' )
	        ),
	 )
);