Which Lower Thirds can be used with Screenflow 7?

I’m trying to find some lower thirds to work with Screenflow 7 (by Telestream).
I have been toldby their support that

“Apple ProRes with Alpha would work. Quicktime Animation with Alpha can work as well.”

However I can’t see a search option to find Quicktime Animation or Apple ProRes with Alpha.

Can you please advise or help?

Very many thanks for your time