...
Select Add
Click to upload and select an image from your device. You can choose multiple if required.
Please note, special characters in image file names are not supported. Please rename any image files with special characters on your device before uploading.
Ensure all of the image you want to display is included within the cropping square.
Press Upload.If you have a YouTube or Vimeo video of your resource, add the link in the box provided
If you have added more than one image, the first one you uploaded will automatically be set as the thumbnail image. If you would like a different image to be used as the thumbnail or for the images to be displayed in a different order, drag and drop as required.
...