Could someone please explain how to use advanced features of CopySOP.
I am wondering how to stamp multiple objects onto same surface using CopySOP and have CopySOP randomize the stamping.
For example, how would 10 different metaball SOPs be stamped onto same POPSOP with CopySOP randomizing the placement.

DR

First read the stamping.pdf tutorial in the legacy section:
http://www.sidefx.com/community/learn/modeling/index.html [sidefx.com]

So I think you just need to stamp a variable with some expression using rand($PT). If you have different metaball sops, you could put them into a switch and then put some form of the param() expression in there.