The item table in project viiew is confusing

Hey, guys.
Sorry if this questions has already been asked (and answered), but I could not find it.
I have just started using Tropy and it bugs me that the item panel in project view always display all photos added. If I want to add new photos to the project and want to view only them, how can I do it?

you can either use lists to organize your items or simply use the automatic Last Import list in the sidebar.