Hello guys I have client that is looking coordinate scheduling across multiple facilities and capable of tracking inventory across multiple facilities.
What really you are referring to?
What does that mean?
In General, ERPNext is already Multi User, Multi Company, Multi Warehouse, near Realtime kind of ERP software system and with regards to scheduling of events, tasks, projects is also possible.
It will be helpful if you put up business case / use case / logic, and try ERPNext for free first.