After you , then tap Move to Shared Library.
After content is moved to the shared library, it’s no longer in your personal library and is visible to all of the shared library participants. To move content from the shared library back to your personal library, follow the steps above, but tap Move to Personal Library instead of Move to Shared Library.
After you to switch back to your personal library.
To turn the feature on or off after you complete the setup process, go to Settings on your iPad.
Tap your account in the top-right corner.
Tap Shared Library, then tap Sharing from Camera.
Tap Share Automatically.
When you If you are missing photos after joining an iCloud Shared Photo Library.