capstone2 Hi
You can open this file:
root/templates/ja_athena/acm/gallery/tmpl/style-1.php
Look for the script at the end of file:
<script>
(function($){
$(document).ready(function(){
$(".acm-gallery .html5lightbox").html5lightbox({
autoslide: true,
showplaybutton: false,
slideinterval: 5000,
jsfolder: "<?php echo $path . 'js/html5lightbox/' ?>"
});
});
})(jQuery);
</script>
and set the slideinterval to the value you wish (in milliseconds)
(check out this page for more options of HTML5 Lightbox: https://html5box.com/html5lightbox/help.php )