Please notice that we changed the Page template to be 100% responsive for the theme, so that you can resize the browser window and see the gallery layout being responsive. This gallery more or less uses the default settings. Except we have chosen to only show the Category menu and then use Posts and Pages. You can combine Videos, Pictures, Pages and Posts in your Gallery.
There are more than 130 different settings you can tweak to make the gallery and menu look just like you want it for your own website.