Random Actors Spawn For Level Creation

I need to have 4 different actors spawn from one original actor on the X and Y axis when the player walks inside a trigger box. Cant figure out the best way to do this. My aim is to have 3D tiles that spawn next to each other in a grid based design.

Use actor location, drag from it’s input and type ‘self’, choose ‘reference to self’. Drag from the output and type vec + vec. In B, type whatever offset you want for X (or Y as the case may be). Drag the output of your vector addition to spawn actor node.