find this line and add the red one.
Code:
print_label_row($vbphrase['save_in_template_history'], '<label for="savehistory"><input type="checkbox" name="savehistory" id="savehistory" value="1" tabindex="1" checked="checked" />' . $vbphrase['yes'] . '</label><br /><span class="smallfont">' . $vbphrase['comment'] . '</span> <input type="text" name="histcomment" value="" tabindex="1" class="bginput" size="50" />');