You would want to make a BP that actually spawns another class of Container BP. so you need
- BP that you place that is only to spawn other containers. This is the one where you place the blutility function
- the BP that acts as a container for the instances. This one is pretty simple. needs a variable for staticmesh, array of transforms, and a construction script that adds the meshes based on the transforms. When I first did this, I had to actually select and modify a dummy boolean on the ‘container’ BP since changing the transform array with a blutility was not calling re-run construction script, but I think you can get around that now by setting “Expose on Spawn” for the transforms, and actually setting them when you do “spawn actor from class”.
Additional node, it will only ever add actors to the currently selected sublevel.