[Koha] Limiting OPAC Searches to Library Holdings Only

We have recently configured our Koha. We would like to limit our OPAC searches to Library holdings only without searching on the Internet. Kindly assist. 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