Option 1: Allow managers and co-hosts to consolidate statements and invoices if the owner and type (statement or invoice) is the same.
There are two use-cases that behave somewhat differently.
Parent-child properties. It's truly only one property, although our system sees them differently.
All properties owned by the same owner. Different properties.
Option 2: Create a consolidated Summary for an Owner, which provides a single Summary document encompassing the sum of all published statements that month.