In this tutorial, we dive into Emitter Spawn in Unreal Engine 5 Niagara! Learn what Emitter Spawn is, why it’s useful, and how to use it to create automatic variations (color, cone angle, size, and more) across duplicated emitters and particle systems without manually tweaking user parameters every time. 
https://dev.epicgames.com/community/learning/tutorials/yr9e3/unreal-engine-ue5-niagara-essentials-emitter-spawn-explained-part-7