Scrolling, autoscroll, How do I make the music scroll behind the curser and not vice versa?

Just that. I know that some of my scores scroll behind the curser - very easy to play along with - but some of them stay stationary as the curser scrolls - v-er-y jum-py. I have searched for the setting that I changed but cannot find it and forget how I changed it. Anyone? Anyone? (Buehler?)

Thanks in advance!

Peace!