acceess-mode-closed-by-default.php

<?php
/**
 * Wbcom Designs - Control access mode for instructor
 *
 * @param  array $access_modes where define access.
 */
function wbcom_istructor_access_mode( $access_modes ) {
	$access_modes = array(
		'closed'    => __( 'Closed', 'ld-dashboard' ),
	);
	return $access_modes;
}
$user_roles = wp_get_current_user()->roles;
if ( in_array( 'ld_instructor', $user_roles ) ) {
	add_filter( 'ld_dashboard_course_access_modes', 'wbcom_istructor_access_mode' );
}