[Koha] loading serial holdings

[john]

I loaded a number of marc records extracted from our
ILS into a test koha system.  The item creation from 952 tags seems to
go pretty well. But I have not been able to find documentation on
loading serial holding statements, whether summary holdings from say an 
866 field or more detailed marc holdings from 853/863 tagging? Any 
pointers to how to configure an incoming marc record for this?

Thanks,

John Rutherford