Essentials 1T Saving selected folders only?

I bought My Book Essentials 1T with the intention of transferring all my photos and a couple of documents off my PC to free up space.   I have no need to back up most of the data on this computer, however, this seems to be the only option.  I can’t see any way to choose only photos, or any specific files at all, and the SmartWare wants to back up my entire computer.

What can I do differently?  Thanks for any advice…

Smartware is quirky you don’t need to use it. Never trust important information to just one drive internal or external no matter who makes it.