Lishy Thank you Lishy for your speedy and helpful reply.
It turns out they my Stagetraxx was not up to date and my outdated version did not have that option under user interface!
Now that I have updated it, I find that the page up/down option does not do what I thought it would!
I was hoping that it would scroll up and down on my playlist and not on the selected songs lyrics.
Maybe this is only possible by remote with the appropriate Bluetooth pedal?