To use an image from image collection click on this image.
Button is intented for selection of image collection.
Button is intented for creation of new image collection. After pressing on this button you will see dialog Image size to set size of image in new image collection. This size can be defined as a value in a range from 8 to 150. Then you must define file name for new image collection. Then Edit collection dialog will appear and you can add pictures to this collection.
Note: It is not recommended to create collections with big number of big images. It is better create several separate collections.
Button is intented for editing of image collection. After pressing on this button Edit collection dialog will appear.