Image Slider Widget: How can I change the images in the slide show

One last thing I would like to know, if you can, if there is the option to change the photos in the slide show.

Yes, you should be able to change or update the images in your Image Slider widget. Here's a quick step by step guide:

1. First, select the said widget and click the wizard or wand icon.

2. After that, the widget setting wizard will open, here you can update your widget settings including the images:

 

I hope that helps. Do let us know if you need more assistance on this.