Make Submission Form Event Owner and Email Optional

/**
 * this function will make frontend event submission
 */
function custom_event_validate($EM_Event, $validate_post){

    if( empty($EM_Event->event_owner_name) || empty($EM_Event->event_owner_email) ){
		$validate_post = true;
	 }

    return $validate_post;
}
add_filter('em_event_validate','custom_event_validate',10,2);