Hi Andrei….unfortunately for any third party plugins, you will need to follow up with their support. However, my guess is that this is coded into their plugin scripts, which means you won’t be able to without editing their plugin directly. I also did a quick look in their support forums as some people have made that request, but it looks like this is not popular enough for them to do it (as they said to a user). I’m not sure any slideshow has that built in as a feature.
If you decide to edit their plugin…it means you won’t be able to update it. But this might help: