Retrieval types...
from the menu. A window as shown below will open. The ways the data about organisms and corresponding objects stored in the database are retrieved are documented as retrieval type.
To
administrate the retrieval types, choose Administration -
Retrieval types...
from the menu. A window as shown below will open.
To add resp. remove a retrieval type use the 
resp.
button. To set the superior type use the
button.