If you type in “hidden” in the details pane search bar the options should appear, though you can also find them in the Rendering section of the Details Pane when the actor is selected. For organization, I highly recommend utilizing either sublevels (in which you could hide/show entire sublevels of actors), or utilize folders within the World Outliner. This would give you greater control over what is seen/not seen when you need it during editing and can help to keep track of various assets placed within larger levels.