Private group threads

[AnAdolt]

So I was doing a little spy work, I guess, just before this. Was reading through some group threads. And I wondered, isn't there an option to make group threads private? Maybe there isn't so all the threads are public domain. On the other hand, maybe no one's realized how to access the option to restrict viewing of them.

[jiminee]

I'm not seeing any option to do so. I think forum admins (not group mods) can change such settings though.