Thousand copies,how?

Hello everyone, UE4 beginner here!

My UE4 project is about a football stadium and I am thinking about all the seats I have to place.

I wanna save many memory (and time) as possible, how can I do it?

I mean, there’s a method/plugin/whatever that allows me to copy 2000 seat and save memory and above all triangles count?
Obviously all my copies would have no blueprint or anything else but the texture of the “original seat”, so I don’ t need any particular behaviour from them.

Many thanks in advance!