I added auxiliary cameras to the scene, and now curious how to know which one is main camera and assign which one is the main from blank state.
Also, nesting Actors into arbitrary hierarchy makes execution broken, and I feel the hierarchies in examples are a little different from that of Unity - maybe more like Unreal way. I met some malfunctions when nesting multiple cameras into a single hierarchy, so might be glad to know how to properly organize, assign and switch current main camera.