Client with ThinClient and Rich Client
If both a PARTdataManager User interface (RichClient) and a 3Dfindit user interface are to be available, select the feature PARTsolutions Enterprise, the desired integration (any number) and optionally other features under Product functions -> Applications.
Client only as 3Dfindit/ThinClient
If you want to work specifically with 3Dfindit, no features other than integration are required under product functions, but they can be installed optionally.