Using this filter you can easily add any custom meta option in the Application post type. Here is a sample code that how you can do that.
if( ! function_exists('extra_application_meta_options') ) { function extra_application_meta_options($options) { $options['My Tab'] = array( 'job_bm_am_my_key'=>array( 'css_class'=>'am_my_key', 'title'=>__('My Custom Key', job_bm_am_textdomain), 'option_details'=>'Description of My Custom key', 'input_type'=>'text', // text, radio, checkbox, select, 'input_values'=>'', // could be array ), ); return $options; } } add_filter('job_bm_filters_application_meta_options', 'extra_application_meta_options', 30, 1);
Here is also an output for using this filter