To get started, click + ADD CONTENT.
Select the Image Thumbnails widget from the Widget menu.
Click + Add Images.
Here you can select images already uploaded to your site, or you can import new ones by selecting Upload an Image. Click Done Selecting Images when finished.
Next, you can rearrange the order of the images you’re using. Click Save when finished.
Once displayed on your website, click the arrows to either side of the widget to scroll through your image thumbnails. Alternatively, click on the image for a full-size view.
For more help, please view the video below: