I don't know why you posted this again and this time at Tech support even though it looks like a request but nevertheless it's really simple to do what you're asking.
Step 1: Create a field on desired interface
Step 2: Write the text you want to be scrolled(You can use the Pilcrow sign ¶ (ALT+0182) if you want to change line and make text after it appear below the text previously).
Step 3: On the Player Enters trigger inside Interface Properties use the Position Field event to make that field go really up or down(depending on where you want it to start scrolling from) like, X: 256, Y: -3000 or +3000.
Step 4: After that, put another Position Field that will move it the opposite way of which you specified with the previous event(e.g. If you set it's Y value to -3000, on this event you'd want to set it to something like 100 or so, that really depends on your game's set resolution). Now to make it scroll smoothly, start tweaking the Duration value, the bigger it is in duration, the slower the next will scroll.
That should work.