Advice on configuring peers and newsgroups in INN2

I am trying out INN2. I suppose I should begin by explaining exactly what I want to do.

I need to configure INN so that:

A. by default nothing is synced unless I manually add a newsgroup to the configuration,

B. so that by adding a newsgroup to the configuration, that newsgroup will be synced with all peers,

C. and finally so that only the entry of a newsgroup name into the configuration will result in syncronization, rather than entire hierarchies.

If I add alt.nobody to the configuration then the group alt.nobody will be synced with all the configured peers, and not the alt.* hierarchy. If I later add the group alt.everybody to the configuration then both groups will be synced with all peers. If I remove a group name from the configuration then that group will no longer syncronize with any peers.

How can I do this in a way that does not require updating the configuration for each individual peer, so that the list of groups will automatically be the same for all peers?