Monthbooks have the ability to put 2 photos on one collage page. To create a collage:
Tap to open your Monthbook in the Chatbooks app
Open one of the photos you want in the collage
Tap on "2-image" on the far right
tap on the gray square where the second photo will go
Select which source you'd like to use for your photo and tap "Use this photo"
You can also crop your collage photos by tapping on the page, then clicking “edit collage”. From there, you can tap on the image to open it, crop and adjust as needed, and then tap “done”.
iOS:
How to make a collage for your Monthbooks
For Classic books:
Open the Chatbooks app
Create a new project or choose an unfinished one
If you’re beginning a new project, pick all the photos you’d like and click the blue “add photos” bar at the bottom of the screen
On the next screen, tap the blue + box in the bottom right corner of your screen
Click “add photo collage”
Choose a collage layout
Choose your source, like “photos from book” to choose from the photos you’ve already added to your project
You can add a caption, date and location, or edit the collage when you click on the page (just tap to move photos around the collage layout)
iOS:
How to make collage pages for Classic Books