Multichannel to Cubase artist ???

I have Cubase Artist 8, and I was wondering is there any download possible for that so I can work with multichannels and export my project to a multichannel audio file? I read somewhere that only Cubase Pro has multichannel features, is that right and do I upgrade to pro somewhere… I have a multichannel concert in few days so it’s kind of urgent dilemma! :smiley: