Scrolling down...

I am trying to use the page-down-arrow-key to scroll through documents in the BINDER. For some reason it isn’t working and therefore I have to move the cursor and click on every document in order to scroll downward. I feel like there must be a simpler way to do this.
Also, sometimes the page-down-arrow-key allows me to scroll down.
What am I doing wrong and how can I correct the problem?

The focus has to be in the binder for the arrow keys to work, as keyboard input goes to the active view.
Best,
Keith

How do i shift the focus so that it’s in the Binder? I seem to have done it without trying and I’m able to scroll down right now, but I’m sure I’ll run into this problem again.

Just click into it. It’s the same as if you’re in iTunes; if you click into the main list area, you can’t use the arrows to browse through the libraries, and vice versa.
Best,
Keith