NOOB question - How use Piper for TTS

Hello. Sorry for asking what I’m sure is a stupid question. I have Rhasspy working flawlessly and integrated with HAOS. I’m currently running Rhasspy with NanoTTS but would like to use the Piper container I’m running on the same Pi5. For the life of me I can’t figure it out, nor find any help on line. Could someone steer me in the right direction please?
Thank you in advance.