Any rotation you make can be shared. And anyone who you share it with automatically subscribes to any updates you make on your rotation.
When you are on your own rotation page (and logged in to the site), you’ll see a share button at the top-center of the page. Click that and copy the link it gives you.
Here’s a video to show how to do that: https://www.youtube.com/watch?v=0R8H-45_9OU