How to create users without Email in WordPress ?

When you set up course –learndash course or Woo sensei or Learnpress , you may wish to have a setup where a student can be enrolled on a course and have a login, without the student having an email address? For example , the group leader just issues them a username and password to login and the student ( group member ) should be able to take up the course

// This will suppress empty email errors when submitting the user form
add_action('user_profile_update_errors', 'my_user_profile_update_errors', 10, 3 );
function my_user_profile_update_errors($errors, $update, $user) {

// This will remove javascript required validation for email input
// It will also remove the '(required)' text in the label
// Works for new user, user profile and edit user forms
add_action('user_new_form', 'my_user_new_form', 10, 1);
add_action('show_user_profile', 'my_user_new_form', 10, 1);
add_action('edit_user_profile', 'my_user_new_form', 10, 1);
function my_user_new_form($form_type) {
<script type="text/javascript">
// Uncheck send new user email option by default
<?php if (isset($form_type) && $form_type === 'add-new-user') : ?>
<?php endif; ?>