In this case you need to customize it from header.php file.
+ Copy plugins/system/jat3/jat3/base-themes/default/blocks/header.php file
+ Paste to templates/ja_university/blocks folder
+ Open header.php file in the template
Find
<h1 class="logo">
<a href="<?php JURI::base(true) ?>" title="<?php echo $siteName; ?>"><span><?php echo $siteName; ?></span></a>
</h1>
+ And use this code below
$lang = JFactory::getLanguage();
if ($lang->getTag() == 'en-GB') {
whatever code
else {
etc.
You will change the link for the logo to Homepage each language.
I only suggest some above solution because this request takes time and out of JA support scope