[Koha] granularity of library control of item viewability and requestability

[Lori Bowen Ayre]

Is it possible for libraries to control whether items they own are viewable
by other libraries (and can they control WHICH libraries can view their
items)?

Can a library make their items viewable but not requestable for filling
holds  (and can they control WHICH libraries can view and which can request
their items)?

Lori