In the last item of the plugin's user interface you can preview your created gallery, before publishing it. 

Different display styles

As already mentioned in the documentation before, there are a total of three different display modes.

The first type of display is the Slideshow, in which only one image at a time is displayed. Using the navigation arrows on the sides you can easily navigate through the other images of the gallery. A counter below the images shows the total number of images in the gallery and the image displayed. Clicking on the image enlarges it and displays the copyright and caption information.

The second type of display is Grid, in which all images are displayed in the same size with a frame when hovering with the courser over the image. Clicking on the image enlarges it and displays the copyright and caption information.

The third type of representation is Masonry. Here, all images are displayed in different sizes, dynamically and with a frame when hovering with the courser over the image. If more images are added or the order of the images is changed, the display in Masonry also changes. Clicking on the image enlarges it and displays the copyright and caption information.