Rearrange slider thumbnails?

Love this plugin.

Is there any way of rearranging the thumbnails.
I’d like them to appear in alphabetical order or rearrange them so that they appear like this.
At the moment, it’s a case of whatever’s uploaded is the one that appears first.
Be really nice if one could drag the elements in the Manage Images sections or something.

Otherwise, is there some coding that could be incorporated to maybe use the image names to appear, for example, in alphabetical order?

Any help would be greatly appreciated.

Thanks

https://www.ads-software.com/plugins/wp-responsive-thumbnail-slider/