This video shows how to work it before the recent update.

Here are updated screeenshots of what there is: https://steemit.com/steemkure/@krnel/steemkure-v0-2-update-member-functionality-to-network-content-curation

And the About page has info on what you can do, did you look at that?

The idea is a place where you can add posts to lists for your curation group/project/guild/community, for now only to select them, but it would have been to develop into review or approval, where you set your own rules for a list/group/whtever, and then review and curate that way, eventually notification of posts added at end of day email or something, following lists, and other stuff.

Eventually there could be trail voting on approved posts, differentiated from submitted posts, who knows. But I've been into posting more the developing steemkure.