How to have a custom field with a drop down and a choice of images for events?

Hi,

I am aware that custom attributes exist for this plugin. I don’t think these do what I need.

I need to be able to have a custom field for events. This custom field needs to be able to have a drop down with a choice of 6 images. Then the site user needs to be able to select one of these 6 images and for their choice to be displayed on the event category page. I think this goes in taxonomy-event-categories.php I believe. Any guidance with be really appreciated!

My code so far, that doesn’t work:

$latest_cpt = get_posts("post_type=event");
foreach ( $latest_cpt as $cpt_post ) {
$theidone =$cpt_post->ID;
    $this_post_id =  $theidone; //get_the_ID();
    $key_2_value =  get_post_meta( $this_post_id, 'custom_select', true );
    if( ! empty( $key_2_value )) {
    $thisisworking =   $key_2_value ;
     }
   // echo $key_2_value;
    }

	// END OF NEW CATEGORY SYSTEM
?>

<div id="indent">
 <span style="font-size:0.2em">
	<h2><?php echo $EM_Category->output('#_CATEGORYNAME'); ?></h2>
	</span>
	<?php echo $EM_Category->output('#_CATEGORYNOTES'); ?></p>
	<p> <?php //echo $EM_Category->output('#_CATEGORYALLEVENTS'); ?>  </p>

	<?php echo EM_Events::Output( array('format'=> $key_2_value
'
<li>
<br />

I have only included a bit of the code I have in taxonomy-event-categories, as the rest is not related to this part. Any help would be really appreciated!

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