CHRI is a SketshUp specialist! ;)

ELse you can do that inside MOI :)

Populate your volume with Tangent cubes ...it's not a big deal!
Then draw a sphere at each center box!

script: /* Attribute a point at each center box's object selected*/ var objs = moi.geometryDatabase.getSelectedObjects(); for ( var i = 0; i < objs.length; ++i ) { var obj = objs.item(i); var pt = obj.getBoundingBox().center; var ptfactory = moi.command.createFactory( 'point' ); ptfactory.setInput( 0, pt ); ptfactory.commit(); }

http://moi3d.com/forum/messages.php?webtag=MOI&msg=2749.36
This one move an object(s) to points yet drawn

Must be existing something for attribute automatically an object to all points selected
but don't remember it for the moment! :(

Must be this one : copy to points :)
http://kyticka.webzdarma.cz/3d/moi/#CopyToPoints

So copy the 2 files inside the folder commands
and make a shortcut "copytopoints" or press Tab and write Copytopoints...or COpyToPoints etc...
any letters you want except spaces

Have fun!