Due to copyright restrictions, SACD cannot be output via coaxial or optical digital outputs, and DVD-Audio is limited to 2-Channel, 24/192 audio only. However, you can output full-resolution SACD audio and DVD-Audio via the players' multichannel analogue audio outputs as well as via HDMI.
When using the analogue audio outputs, no additional configuration is needed, as these outputs are always active. You merely need to select the appropriate input on your pre-amplifier or AV receiver.