To share/copy photos from one Chatbook to another Chatbook:
1. Open your Chatbooks App and be sure that you are signed in to your account.
2. Tap on the book from which you would like to copy photos.
3. Long-tap on one of the photos that you would like to copy.
4. Select the photos you want to copy over by tapping on them individually.
5. Tap "Copy to" at the bottom.
6. Follow the on-screen instructions.
7. Your photos will now be in your Chatbook of choice.
Below is a video to show you step by step how to copy photos to a different Chatbook on iOS