I just received my ColorSource 20/40 and was setting everything up. I was assigning lights/dimmers to my different playbacks and somewhere in the process I named the first playback. However, when I touch Playbacks at the top of the touch screen and it shows the names of all the playbacks, they're ALL named what I named the first playback. I cannot seem to get to how/where I can re-title the others appropriately. I do not see it in the manual either. Anybody have the answer??