[Koha] how to show some fields in the opac

[izzeldin mojawir]

Dear All,
The marc field 530  Additional physical form available note does not appear
in my opac .I want to show it in isbd view .What    setting should I do to
show it .I used version 3.0006010 on ubuntu .
Thanks in advance
Izzeldin Mojawir
O.I.University
SUDAN