Changing pickup fields label

functions.php

<?php

function orddd_change_pickup_date_label_callback(){
  return __( 'New Pickup Date Label', 'order-pickup-date' );
}
add_filter( 'orddd_change_pickup_date_label', 'orddd_change_pickup_date_label_callback' );


function orddd_change_pickup_time_label_callback(){
  return __( 'New Pickup Time Slot Label', 'order-pickup-date' );
}
add_filter( 'orddd_change_pickup_time_label', 'orddd_change_pickup_time_label_callback' );