Thanks for the suggestions. I don’t think any of you understood the question. I already use a routine where I say play “Caroline from the Ross”. The routine command triggers “play Manx AM from radio player.” Therefore Alexa plays the Manx AM stream.

However I could not listen to Peter Phillips last night via Alexa because much of his show had the football from a local match. Plus Friday Manx AM during the day was not playing Caroline North until later in the day.
There used to be a way using an app that would play bespoke streams but this workaround became a paid App and I don’t feel the urge to pay for this for a few hours inconvenience once a month.