Hi @johnford59 thanks for posting to community!
I've listed a couple of ways you can edit your shuffle station list depending on what device you're using.
There, you can select or deselect which stations you'd like to appear in your Shuffle by Station or Genre. Tap Save on the top right corner of your screen when done.
Touch the back arrow in the upper left again to save your changes and return to your station list.
Shuffling from the Now Playing screen:
Shuffling from the My Collection page:
Customizing Shuffle Stations:
Stations with a blue shuffle icon will be included in the Shuffle rotation. Clicking on that icon will remove that station from your shuffle rotation.
You can customize the station included in your shuffle selection by:
To exit Shuffle, simply select and play an individual station.
Let me know if you have any other questions! 🎧