sub-gallery

Greetings.

Photo Gallery by Supsystic version 1.9.14

From https://wordpress.org/plugins/gallery-by-supsystic/: “We offered wide range from animated effects, branding possibilities, inclusion of sub-galleries, social network accessibility, and much more.”

Need sub-galleries but cannot figure out how to set them up and cannot find any documentation. Can you point me to some documentation on that?

Thanks much