How to duplicate a spawning actor/BP

I want to know how to duplicate the effect this blueprint has onto multiple objects, or a way to make duplicates of the spawner.

You probably do not want to use Tick for this unless you need the rocks fall every 3 seconds until the end of the game.

You could employ a Loop hooked up to a Custom Event for something like this:

Also, right click the spawner’s Return Value and promote it; this will create a variable with correct type, you can then turn it into an array and add the spawned objects there. This will ensure you always have access to all the spawned objects.

Maybe create a Component that asks for a the time interval and what to spawn. Then it’s just a question of adding the component to as many BPs or objects in the scene you want, giving them the ability to spawn stuff:

Scene component:

Usage:

In this case I dragged the component to a trigger a volume already present at the scene. I set the spawning time and what to spawn. And done.