[Koha] Federated OPAC for two or more Koha instances

Hi I have a site that, for some reasons, have three instances of Koha system running on different servers. I am interested in establishing how I could go ahead and have a single federated search interface for all the three instances. That is, an interface that enables patrons to search all the three instances at once. Kind Regards, Admire Mutsikiwa ICT Projects Manager Libraries University of Zimbabwe <Tel:+263-4-303276> Tel:+263-4-303276 "It is easy to dodge our responsibilities, but we cannot dodge the consequences of dodging our responsibilities." Josiah Charles Stamp, 1880-1941, former director of the Bank of England