How to get multiple Audio Outputs from FL Studio VST Multi?

[docbot]

Can't figure out how to get multiple audio outputs from the FL Studio VSTi Multi plugin. Sending midi to different channels will trigger the different FL synths. but how do I split the audio into channels in Bitwig?

[docbot]

Also have the same problem with serums Sub OSC, which has a direct out button. When using the Audio Receiver on an Audio Track, Bitwig only shows the general Stereo Output + Pre and Post for Serum.