Breadcrumb navxt

Hello, I've just installed the breadcrumb Navxt plugin in my wordpress clubiomallorca.com. Where I have to copy the breadcrumb code? <div class="breadcrumbs"> <?php if(function_exists('bcn_display')) { bcn_display(); }?> </div> Breadcrumb instruccions said you have to place the code in file header.php Where I have exactly to place it in catch everest pro theme?