Adding a CUSTOM POST TYPE to a Wordpress site doesn't include all the options the theme has in other POST TYPES

I am using a theme for my Wordpress site:

THEME: https://themeforest.net/item/prague-architecture-and-interior-design-wordpress-theme/19618927

Site: RainProPixel.com

The theme has several post types, but I would like to add more.

I've added a new one called "Training" to "Post-type.php":

<?php

/*

• Portfolio post type. */

function register_custom_post_type() {

$services_url_slug = cs_get_option('services_url_slug') ? cs_get_option('services_url_slug') : 'services-item';
$services_category_slug = cs_get_option('services_category_slug') ? cs_get_option('services_category_slug') : 'services-category';

// New Post Type
register_post_type( 'services',
  array(
    'labels' => array(
        'name' => esc_html__( 'Services','prague-plugins'),
        'singular_name' => esc_html__( 'Service','prague-plugins')
    ), 
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail', ),
    'menu_icon' => plugins_url( 'assets/repairing.png' , __FILE__ ),
    'public' => true,
    'has_archive' => true,
    'rewrite' => array('slug' => $services_url_slug),
  )
);
// New Taxonomy
register_taxonomy(
  'service-category',
  'services',
  array(
    'label' => esc_html__( 'Categories','prague-plugins'),
    'rewrite' => array( 'slug' => $services_category_slug ),
    'hierarchical' => true,
  )
);

$training_url_slug = cs_get_option('training_url_slug') ? cs_get_option('training_url_slug') : 'training-item';
$training_category_slug = cs_get_option('training_category_slug') ? cs_get_option('training_category_slug') : 'training-category';

register_post_type( 'training',
  array(
    'labels' => array(
        'name' => esc_html__( 'Training','prague-plugins'),
        'singular_name' => esc_html__( 'Training','prague-plugins')
    ), 
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail', ),
    'menu_icon' => plugins_url( 'assets/repairing.png' , __FILE__ ),
    'public' => true,
    'has_archive' => true,
    'rewrite' => array('slug' => $training_url_slug),
  )
);
// New Taxonomy
register_taxonomy(
  'training-category',
  'training',
  array(
    'label' => esc_html__( 'Categories','prague-plugins'),
    'rewrite' => array( 'slug' => $training_category_slug ),
    'hierarchical' => true,
  )
);

// New Post Type
$projects_url_slug = cs_get_option('projects_slug') ? cs_get_option('projects_slug') : 'projects-item';
$projects_category_url_slug = cs_get_option('projects_category_slug') ? cs_get_option('projects_category_slug') : 'projects-category';

register_post_type( 'projects',
  array(
    'labels' => array(
        'name' => esc_html__( 'Projects','prague-plugins'),
        'singular_name' => esc_html__( 'Project','prague-plugins')
    ), 
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail' ),
    'menu_icon' => plugins_url( 'assets/projects.png' , __FILE__ ),
    'public' => true,
    'has_archive' => true,
    'rewrite' => array('slug' => $projects_url_slug),
  )
);
// New Taxonomy
register_taxonomy(
  'projects-category',
  'projects',
  array(
    'label' => esc_html__( 'Categories','prague-plugins'),
    'rewrite' => array( 'slug' => $projects_category_url_slug ),
    'hierarchical' => true,
  )
);

// New Post Type
register_post_type( 'books',
  array(
    'labels' => array(
        'name' => esc_html__( 'Books','prague-plugins'),
        'singular_name' => esc_html__( 'Book','prague-plugins')
    ), 
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail' ),
    'menu_icon' => plugins_url( 'assets/agenda.png' , __FILE__ ),
    'public' => true,
    'has_archive' => true,
    'rewrite' => array('slug' => 'books-item'),
  )
);
// New Taxonomy
register_taxonomy(
  'books-category',
  'books',
  array(
    'label' => esc_html__( 'Categories','prague-plugins'),
    'rewrite' => array( 'slug' => 'books-category' ),
    'hierarchical' => true,
  )
);

// New Post Type
register_post_type( 'media',
  array(
    'labels' => array(
        'name' => esc_html__( 'Media','prague-plugins'),
        'singular_name' => esc_html__( 'Media item','prague-plugins')
    ), 
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail' ),
    'menu_icon' => plugins_url( 'assets/magazine.png' , __FILE__ ),
    'public' => true,
    'has_archive' => true,
    'rewrite' => array('slug' => 'media-item'),
  )
);

// New Taxonomy
register_taxonomy(
  'media-category',
  'media',
  array(
    'label' => esc_html__( 'Categories','prague-plugins'),
    'rewrite' => array( 'slug' => 'media-category' ),
    'hierarchical' => true,
  )
);

// New Post Type
register_post_type( 'exihibitions',
  array(
    'labels' => array(
        'name' => esc_html__( 'Exihibitions','prague-plugins'),
        'singular_name' => esc_html__( 'Exihibition','prague-plugins')
    ), 
    'menu_icon' => plugins_url( 'assets/museum.png' , __FILE__ ),
    'supports'            => array( 'title', 'editor', 'excerpt', 'thumbnail' ),
    'public' => true,
    'has_archive' => true,
    'rewrite' => array('slug' => 'exihibitions-item'),
  )
);


// New Taxonomy
register_taxonomy(
  'exihibitions-category',
  'exihibitions',
  array(
    'label' => esc_html__( 'Categories','prague-plugins'),
    'rewrite' => array( 'slug' => 'exihibitions-category' ),
    'hierarchical' => true,
  )
);

}

add_action( 'init', 'register_custom_post_type', 0);

The post type shows up in my Wordpress Admin Menu:

Wordpress Admin Menu

I can create new posts:

Creating A New Post

My problem is that other POST TYPES that came with the theme have an additional set of options that I need to be able to edit also, called "Service Options":

Service Options as seen on other post type

The DIV ID for it is called, "service_post_options" and I can't find where that's created on the site.

DIV ID in inspector

Does anyone have any clue what I'm missing here to make the new post type match the ones that came with the theme?

source https://stackoverflow.com/questions/69381848/adding-a-custom-post-type-to-a-wordpress-site-doesnt-include-all-the-options-th