How do I automatically add actors to a level？

Development Programming & Scripting
4

Call the following function to spawn the actor:
SpawnActor<AMyActorClass>(AMyActorClass, Transform);

This function resides in UWorld which you can access by calling GetWorld() from the actor you’re spawning it from.
So for example: GetWorld()->SpawnActor<AMyActorClass>(AMyActorClass, Transform);

Note: you need to include the following file to call this function: #include "Runtime/Engine/Classes/Engine/World.h"

Let me know if this answers your question.