Give to site admin the option to “skip confirmation email” when adding new user

in wordpress multisite when we give to site admin the option to add new users, site admin dont have the “checkbox” to add the new user without sending the user email with link activation (see the screenshot)

how can we add this option to site admin?

Paste this in your functions.php file:

function my_skip_confirmation_email() {
    if ( is_multisite() && current_user_can( 'create_users' ) ) { ?>

    <table class="form-table">
        <tr>
            <th scope="row"><?php _e( 'Skip Confirmation Email' ); ?></th>
            <td>
                <input type="checkbox" name="noconfirmation" id="noconfirmation" value="1" />
                <label for="noconfirmation"><?php _e( 'Add the user without sending an email that requires their confirmation.' ); ?></label>
            </td>
        </tr>
    </table>
    <?php }
}
add_action( 'user_new_form', 'my_skip_confirmation_email' );