Controlling placement of replicated actors and an object

I am using Voxel to create a world. I have an object that replicates and a vehicle that replicates. The two are placed in the game at the same time. Only the vehicle changes position.

My question I need 100 instances to be in the game. How do I get the instances to separate out across the game board? Is there a plugin? I am using blueprints.

TIA