[Koha] MARC21-Field 733

[Beda Szukics]

Hi

The default MARC21-framework doesn't contain the field 733. How to add it?

Am I right that I need this one to be able to connect parts of a work
with the main title?

My current example: I have a volume with four overtures by Gluck bound
together. Each of these overtures has its own titlepage and so its own
bibliographic record.

Thank you                          Beda