Subgroups for Organic Groups

this info here does not help me at all to understand what to do and how for the 6.x version. please try to give at least some basic info. would help us a lot.
thanx
bernd

I'm confused about how propagation works.

Does selecting "Parent" mean member propagates from the child to the parent and child means to propagate from the the paren to the child?

I want members of the parent group to be members of all subgroups.

Conversely for content, I want posts in the subgroups to show up in the parent group. Is this "Parent" propagation for the content?

I'm just glancing at the src for this, seeing as how I faced the same abominable documentation (see above) as the previous posters have. Here's what I've found:

The subgroups are controlled by the Book module in core. Go to Administer -> Content Management -> Books (6.x), click the "Settings" tab, and enable your group content type in the list of types. This will allow it to become EITHER a parent or a child in the hierarchy (the book outline, in the terms of the Book module).

Then switch to the Edit view of the group node representing the top of your hierarchy, and expand the "Book Outline" section below where you enter the Title and Body.

If this is the parent node, click the dropdown box called "Book:", and choose the "create a new book" option. This will make that node the parent of all forthcoming groups you assign to it.

For every child group, click that same dropdown box ("Book:"), and choose the name of the parent group, which will automagically populate the dropdown combo box.

It might help to have the subgroups block enabled from the Blocks administration page.

Good luck!