This page covers how to use the features of Procedural NPC Crowds in Blueprints.
How to adjust spawn amounts:
There are two major ways to adjust spawn amounts in V2, I will show you both ways here.
To adjust the max spawn per spawner, go to the BP_Spawner actor and change the max spawn amount.
To adjust the number of spawners, go to the BP_PedestrianPath actor and find the Place Pedestrian Spawners event. From there, adjust the Spline Distance addition value. By default, it is set to 600, which spawns many spawners. I recommend values between 2000-4000.
IMPORTANT: Do not put this at 0 or you will lock up the editor with an infinite recursive function.