Hey there @Cekkaaaaaaaa! Welcome to the community! That’s quite an ambitious project for a beginner! Depending on how you handle the RTS camera you have a handful of possible methods.
If your camera is what your player controller in the RTS layer, then you can use Possess node, and just make sure the hero you’re going to control is prepared with a third person camera. The player controller system will swap to that actor’s available camera.
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Here’s a video that can help understand a bit how you could swap back and forth:
