[Koha] Koha for consortiums

Hello, I am exploring Koha in a consortium setting, and would really appreciate any information on that topic. I have looked around, but I will admit that I have not found any recent information on the best design, given a single database/installation of koha. How, for instance, are sublocations (such as collections) defined if the koha installation is set to keep libraries separate? Is there any place where the conversation on this topic is gathered, or a project where the configuration decisions have been shared? I have looked at the vokal wiki, for instance, but that seems mostly about interface design at this stage. Thanks, Steve