How do I create a shortcut in ios to open an app and tap 1 selection?

I can go multiple ways with this, and if there's a more applicable section I should have posted in, please let me know.

-help here = thanks

-good tutorial link = thanks

-similar post I can read = thanks

I want to create a shortcut I can access with Siri, to open a specific app, and choose/tap an available item.

Specifically, the app "DI.FM Radio", and the item is a channel preselected and always appears as a "favorite". The result would be the channel playing.

From what I can tell, the app doesn't have any built-in commands to access.

TIA