It depends on your task, if you need 10 lines of text information that moves independently, so you will need 10 text fields. Or you could scroll one text field and change it's content with a new information (next record). For scrolling of the text field you will need Timer
or Enter frame handler
or Tweening engine
, as for changing text you will need some logic, like if text goes offscreen - show another text data.
For me, your question looks very similar to this one, check it, maybe it will be helpful for you.