I'm trying to figure out a way to make a specific effect... In this video, at approximately 1:08, the great Derek Garbos uses an effect where a cue's brightness sweeps back and forth between projector zones. i'm trying to figure out if this is achieved with a zone chase, or time shifting effect? I'm sure there are many ways to do this, and I know it's something simple that I'm just not thinking about. I' can achieve something like it by time shifting a brightness effect, but I can't figure out how the effect is going back and forth. Time shifting only shifts the effect in a positive or negative value, so the effect would basically just cycle, and not sweep back and forth. I'd love to be able to use this effect as a quick effect. Any suggestions?