Select the Gallery that you want to work on.
Use the item arrangement menu to change the arrangement pattern of the gallery.
Use the scale to frame checkbox to set whether the change to the gallery's frame affect the size of its content (checked) or not (unchecked).
The Elements Per Page scale lets you set how many items are displayed in each gallery page.
The columns scale determines the number of columns in each gallery page.
Use the spacing sliders to set the size of the spaces between gallery's columns and rows.
