Hi@ bewustweerbaar
We will add this feature in our next update.
For now you have to change into the code of index-project.php file open it
and find the below different your line
on line no 19 <img src="<?php echo $current_options['project_one_thumb']; ?>" class="img-responsive" alt="thumb one">
line no 38 <img src="<?php echo $current_options['project_two_thumb']; ?>" class="img-responsive" alt="thumb one">
line no 57 <img src="<?php echo $current_options['project_three_thumb']; ?>" class="img-responsive" alt="thumb one">
line no 76 <img src="<?php echo $current_options['project_four_thumb']; ?>" class="img-responsive" alt="thumb one">
And add enchor tag before of all these above four line .
like this
line no 76
<a href="add your custom link"><img src="<?php echo $current_options['project_four_thumb']; ?>" class="img-responsive" alt="thumb one"></a>
Let me know for further assistance .
Thanks
Akhilesh