Learn the basics of the Unreal Engine 5 Niagara User Interface (UI)! In this video, we break down all the essential windows, panels, and layouts inside the Niagara Editor so you can navigate and build VFX with ease. 
https://dev.epicgames.com/community/learning/tutorials/WBmYz/unreal-engine-ue5-niagara-basic-ui-2-comprehensive-guide