Step 1:
Create a file called test.module in your modules directory
Step 2:
Copy and paste the following code
<?php
function test_form_alter($form_id, &$form) {
if (isset($form['type']) && $form['type']['#value'] .'_node_form' == $form_id) {
if (is_array($form['taxonomy'])) {
foreach ($form['taxonomy'] as $vid => $taxonomy) {
if (is_numeric($vid)) {
if ($taxonomy['#multiple']) {
$form['taxonomy'][$vid]['#type'] = 'checkboxes';
}
else {




