WordPress: Edit Category / Post List

edit-custom-category-list.php

//Edit the Category List

  add_filter( 'manage_edit-post_type_columns', 'set_custom_edit_post_type_columns' );
	// Add to admin_init function   
	add_filter( 'manage_post_type_custom_column', 'manage_post_type_columns', 10, 3);
	 
	function manage_post_type_columns($out, $column_name, $id) {
	    switch ($column_name) {
	        case 'icon_image': 
              // Output custom post_type field here
              $out .= '';
	            break;
	 
	        default:
	            break;
	    }
	    return $out;    
	}
	function set_custom_edit_post_type_columns($columns) {
	    unset( $columns['description'] );
	    $columns['icon_image'] = __( 'Image', 'icon_image' );

	    return $columns;
	}