How to create crowd in Unreal Engine

Hi everyone! I nee help in my project. Well, I have a one character in UE4 that I want to create a crowd from it. Like duplicate it in many number. How do I do it? What AI format? Have any tutorials?
Thank you I really appreciate any help.

Hi!

This is basic crowd system setup:

https://forums.unrealengine.com/showthread.php?51054-Super-Simple-Tutorial-Basic-City-Crowd-quot-System-quot

This is tutorial about crowd with advanced AI:

Part 1 Unreal Engine Crowd Tutorial Part 1-4 - YouTube

Part 2 Unreal Engine Crowd Tutorial Part 2-4 - YouTube

Part 3 Unreal Engine Crowd Tutorial Part 3-4 - YouTube

Part 4 Unreal Engine Crowd Tutorial Part 4-4 - YouTube