When you use the AI Images feature to create images, Photoroom creates 2 images by default. But you can generate more images as required.
You can either:
Select the dotted menu for an AI Image and then select Generate 4 more to create more images based on the same prompt.
Select the purple and white arrow icon or Generate again to create more images based on the same prompt.
Enter a new prompt (or reuse a prompt and edit it) to create images based on the new prompt.
To learn how to make an AI Image, see: Create an AI Image.