You must indicate what delphi version for using firstly
What you are needing seems like a "ticker" app (text scroller).
I have a lot of experience in that field because I developed some tickers for information, bingo, casino,.... panels in the past.
I can build/give you some editor for creating the compositions, too? This editor creates description files (XML) with their details (timings, repeating time, wait times, transition effects, ...) for running in plasma engine. You put that files in a concrete folder and Ok.
But i will need all specs before my commitment.
Regards
Price will be concreted once I will know all specs.