It's one of those shows that runs pretty much constantly. I think at least twice an hour, maybe more. It's pretty easy to get right into the next show. You just hang out in the waiting area till the doors open to let you into the seating area.
In my experience, it runs continuously throughout the day. We just go to the animation building and ask when the next show is. If it's 20-30 mins away, we check out the other things in that building for a while, then get back to Crush.