Tutorial:
>> Field Selection: You may show or hide any fieild from [Settings > Field Selection]
>> Overlay Style: Choose [Styles > Thumbnail > Overlay Style > Overlay Interaction
= "FadeIn on Hover"] 
Tutorial:
>> Field Selection: You may show or hide any fieild from [Settings > Field Selection]
>> Overlay Style: Choose [Styles > Thumbnail > Overlay Style > Overlay Interaction= "SlideOut on Hover"]