AffiliateWP: limit leaderbaord to specific affiliate group

functions.php

add_filter( 'affwp_leaderboard_defaults', 'group_affwp_leaderboard_defaults', 10 );
function group_affwp_leaderboard_defaults( $defaults ) {
    $defaults['connected_to'] = array(
        'get_connectable'      => 'affiliate',
        'where_connectable'    => 'group',
        'where_id'             => 2, // ID of the affiliate group
        'where_group_type'     => 'affiliate-group',
    );

    return $defaults;
}