The desktop client does not come pre installed with default Entities and Transforms. These are added to the client by installing desired Hub items. The hub item installs the relavant Entities, Transforms and other client elements.
To get the official Paterva Entites and Transforms you need to install the "PATERVA CTAS" Transform seed to your client from the Transform Hub.
This can easily be done by going over to the Transform Hub page and clicking the Install button on the first item which is PATERVA CTAS. This will install all the standard Paterva Transforms, machines and Entities.