JTvD:

There are actually a couple of ways to show both the chords and the words.
You can open up a song "note" window (sorry I'm not at my BIAB PC so this is "general" info).
Then move it to (say) the upper right-hand corner of the BIAB window, make it just large enough so that it doesn't cover the chord grid,
and just type in the text (lyrics) that you need.

Problem is, you can't make the box very big or it will cover up your chord grid.
Either the song has to be short or you can just type in a few key words to help you remember the full song text.

For example:

Jingle bells .... Oh what fun... etc.

The other way is to enter the lyrics into the "Karaoke" or "Buskers" window (again, not sure where exactly).

Then it will come out like

[C] Jingle bells, jingle bells, jingle all the way
[F] Oh what fun it [C] is to ride .... etc.

and it will scroll as the song progresses.

The drawback here is that you likely won't be able to view the chord grid at the same time.

Let us know if you can't get these to work.
Someone sitting at their BIAB PC will be able to step you through it.

Good luck!
LLOYD S