Have to say first that I love the YouTube videos I have seen of your band - it goes without saying, I am a huge Rush Fan, and YYNOT are pretty fantastic at covering one of the best musical trios ever.
Your question has been asked before, so hopefully the following thread will get you going
I used to used the background rack, and that is still an option, but now for any common racks, I created a Linked Rack and just have that dropped in each song