I'm going to have to change the subject line of this thread, clearly! A subgroup IS the answer! Thank you, both Duane and Shal.
So if I understand correctly, a group CANNOT see a subgroup's archives - or, in fact, any message that the subgroup sends solely to the subgroup. I've drawn a little schematic (attached) just to make sure I've gotten it right.
Next question, then: can I take an existing stand-alone group ("bird") and turn it into the subgroup of a new group ("chicken")? If yes, then the only thing my bird members would have to understand is that when they want to speak of chickens, they have to send to the larger chicken group; when they want to talk about eagles or penguins, they send to the bird group. The chicken group, on the other hand, ALWAYS sends to the chicken group. In fact, they don't even know that the bird group exists, right?
Apologies for the extended animal metaphor. The real purpose of these two groups isn't half as interesting or picturesque.
Thanks again. -D
