[Koha] management of consortium

[Mohamed zalabany]

hi all
i want to know if i have libraries consortium and i need every library see her records only from opac or stuff 
is their any configuration available from administration to do that 
or the data will be searchable for all branches
the second 
could we change the opac interface for every library in the consortium when the user of this library enter with his user name and password



Mohamed El Zalabany
Integrated library systems consultant
LibroTech
for library systems and information technology
http://www.librotech.net
mh_zalabany at hotmail.com
Mobile: 0111291444