Once you've opened the title in the Title Adjustments workspace (as you have in your illustration, go to the Text menu at the top of the interface and select the Roll/Crawl Options.
(FWIW, my book on Amazon gets this right. )
Sorry Steve - I must be missing something.
My screenshot shows that Text is selected - clicking it again has no effect.
There is no change to what I showed in the screen shot.
We are talking about Text (as to the left of Style, Animation etc.)?
Are you clicking on the Text tab on the Adjustments panel? You should not be.
As I said above, you should click on the Text menu at the TOP OF THE PROGRAM. There you will find the options to control Roll/Crawl.