The whole soundfield is available to emulate the bass management that might occur in consumer
equipment; this can be chosen in the preferences of the renderer.
Creative bass management can be achieved by a number of avenues: multiband splitter, The Cargo Cult
Stemcell surround filter software, and so on.
Use of the LFE channel can be considered for supportive elements of the mix but not as a destination for all
low-frequency content. Do not rely on the LFE channel as your exclusive bass channel.