[Koha] Sharing patrons across libraries in Koha

[R A]

Hi,

In our institution we have a few libraries in different locations. All the
patrons are affiliated with the institution, not with a specific library.
What are your suggestions on how to organize them in Koha? It seems that
Koha requires them to always be affiliated with a specific library -
doesn't allow to associate them with multiple libraries at the same time
and it also doesn't allow to associate them with a defined group of
libraries ... Ideas please?

Thanks.

R