No, printing multiple individual photos in a single frame is not possible. However, you can still achieve a similar effect by creating a collage with the editing software of your choice. This will allow you to combine multiple photos into one single image file.
You can then visit the WhiteWall website and upload your collage file as you would with any other photo. Select your preferred print and frame options to complete your order.
As an alternative and if you prefer not to create a collage, consider ordering multiple smaller frames and arranging them together on your wall to create a gallery effect.