Is There "Do once" or "Create one particle at xxx position" in niagara?

I want make a gold coin niagara, create a coin particle at where enemy dead, but handreds coins in one niagara, not handreds niagaras.
So, Is there a function or moudle allow me to “call” niagara spawn a particle at specific position ?
If there is some other way to make thousands coins in game and have a good performance at same time, how?