The configuration options used by the Juicebox-Pro Top Aligned Demo gallery can be found in its 'config.xml' file here: http://www.juicebox.net/demos/pro/top/config.xml
You should be able to copy and paste all the configuration options (all the attributes to the opening <juiceboxgallery> tag, except for the user-specific Fotomoto settings) into the Pro Options text area of your own gallery (in the gallery settings window). WP-Juicebox will automatically filter out any Lite (non-Pro) options (which should be set via the plugin's own input fields).