How does Forecast handle multiple entities, for example a business Group?
At this stage, Forecast.Live works on the rule "One Database = One Company".
If there are multiple companies on multiple database, it's easy to add Forecast.Live to each entity.
From here, your Partner or Plus Software can consolidate reporting using Snapshot, which uses the same Data Connector.
It's important to note that if your database contains multiple entitys' data, that data will be available to all users on your portal.