Edit GalleryID button:
Similar to Fisheye Gallery, you can define a unique id for the gallery by clicking on this button. GalleryID only accepts letters, numbers and underscore.
Item List:
You can add a new item by using the "Add" button
You can delete an item by using the "Delete" button
The up and down arrows are used to order the menu items  
Edit Description button:
By clicking on this button, you can edit the description of each image listed in the Item List. The image description is similar to the text element; you can change the font face, size and paragraph alignment.
Item Property:
You can define if an external link can be opened while clicking on an image in the gallery: check the “Click to open web page” box, then specify an external URL.
You can define the image thumb nail title by editing the “thumbTitle” field.
By using the textPosition dropdown list, you can change the description text of an image to left, right or bottom.
The sideTextWidth value stands for the space between the image and its description text.
Image Property:
You can define border color for the image in the scroll gallery and you can change the thickness of this border by modifying the “Thickness” value.
The checkbox “isHorizontal” is checked by default. It means that the scroll is horizontal. If you uncheck this box, the scroll of gallery will be vertical.