engine/docs/en/graphics/camera/multiCamera.md

order, title, type, group, label

order	title	type	group	label
3	Multi-Camera Rendering	Graphics	Camera	Graphics/Camera

In the case of multiple cameras, many customized rendering effects can be achieved by combining the camera component's viewport, cullingMask, clearFlags, and other properties.

For example, by setting the viewport, multiple cameras can render scene content at different positions on the canvas.

Another example is achieving picture-in-picture effects by setting the cullingMask.