- Yes: filters billing entries to show which ones have an invoice generated for them
- No: filters billing entries to show which ones do not have an invoice generated for them
- One Invoice: filters billing entries to show those that only have one invoice generated
- Two Invoices: filters billing entries to show those that have two invoices generated
- Three Invoices: filters billing entries to show those that have three invoices generated
- More than three invoices: filters billing entries to show those that have more than three invoices generated