All of your assets are stored together in a space labeled All Assets.
An asset library acts like a playlist in a music app: when you add an asset to a library, the library asset is really just pointing back to the original asset in the All Assets group.
Asset libraries allow you to organize your assets any way you like. Any library can contain any assets, and any assets can exist in any number of libraries. Assets are not actually copied to each library; in a library, an asset is really just a representative for the “real” asset that is always stored in All Assets.
The asset library is smart, too. If you attempt to delete an asset from a library, Extensis Connect will ask if you want to remove it from the library or delete it everywhere: from all libraries that contain the asset as well as from All Assets.
Creating an asset library
You can create an asset library in two different ways:
Click Add Library at the top of the Asset Libraries pane.
Select one or more assets, right-click any asset in the selection, then choose Save as Library from the shortcut menu.
Removing an asset library
To remove an asset library, click the menu next to the asset library’s name and choose Delete Library.
Connect will ask if you want to remove only the asset library or the remove library and delete its assets everywhere (from All Assets and any other asset libraries that include them).