These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
Attention PPC Users: Sadly it is not possible to include the boo scripting interface for the ppc architechure at this point of time. When boo becomes available for ppc we will provide an update that enables it. Thank You, Fedora Banshee Maintainers