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.
banshee has not had an upstream for 7 years now, the code is terrible and bitrotten and it no longer even works at all on modern Fedora. please do not revive unless you are prepared to rewrite very large chunks of C# code.