Ok, here's my step by step guide in setting up the Virus Control as a multi timbral multi out instrument.
Click the "New Tracks" button & select "Software Instrument", make sure you check the multi timbral box & decide how many tracks you want up to 16 for the TI.
Select the Virus Control multi out in the newly created channel strip
When VC opens click the "Patch Utility" button, under the "Config" button you need to change the USB Audio Mode to 3 Outs, it's up to you if you have inputs active - I normally have No Input selected.
Once you have done that you can set up your patches & send them to any output you like by either ctrl clicking the Direct out button & selecting the output or, by selecting the patch number from the left then clicking the common button & selecting the output from the Main Out menu. The quickest way is ctrl clicking the direct out button
To get your 3 channel strips in the Logic mixer click the little "+" button at the bottom of the channel strip twice.
Now you should have up to 16 tracks in the Arrange area for your parts, 3 strips in the mixer for your USB outs & a correctly set up VC allowing you to swiftly change the audio routing as required.
This should be enough to get you up & running.