Use code from templates in page.php

How can I use the code from the EM templates in page.php? Using the following code:

$techs = new WP_User_Query( $args );
 foreach($techs->results as $tech) :
  setup_postdata( $post );
 endforeach;

 foreach($events as $event ) :
  setup_postdata( $post );
 endforeach;

 $previous_course_date = "";

 foreach ( $events as $event ) {
  $current_course_date = $event->event_start_date;
  if ($current_course_date != $previous_course_date) { ?>

  <h5><strong><?php echo $event->event_start_date . " to " . $event->event_end_date; ?></strong></h5>

  <?php }
  // COMPLETE CODE COPIED STRAIGHT FROM attendeelist.php
 }
 wp_reset_postdata();

results in the following error:

“Fatal error: Call to a member function get_bookings() on a non-object in \wp-content\themes\test\page-techs.php on line 71”

Does anyone have any ideas? If I use

echo $event->output('#_ATTENDEESLIST');

It works, but I need to customize it, and would prefer to use the code from the template directly in page.php than edit copy of attendeelist.php template

Thanks in advance!

https://www.ads-software.com/plugins/events-manager/