Create a Collection
You can create a collection with the plus icon, give it a name and description (searchable) and add your Content Items to it.
You can add items using the star icon or the keyboard (arrow & space bar).
Working with Collections
The collections in the sidebar of the Content Browser have two toolbars.
The toolbar for operating on the collection, e.g. add new, edit, delete the collection.
The toolbar for operating on the items in the collection, e.g. download, share, […], clear collection.