Organizing different geometries inside a larger one

I have a main pyramidal volume, and I want a group of smaller volumes distributed within it. Currently, these volumes are separate. I want them to be arranged within the main space at different heights and positions. I’ve tried using Kangaroo’s Collider, but nothing comes up. Can anyone help?

any help starts with uploading what you already did. *.gh file with small example of the issue internalised. No plugins, that is the fastest way to get answers. Regards, Eef