Until 2016 all the entity record types were tied to a single subsidiary. 2016.1 vendor's could be shared among all the subs and recently customers are too. That mean single vendor or customer record can used for any transactions for any subs. Same idea is for employee too - which is a bit complicated due to jurisdictional tax issues, permission issues and other regulatory reason. As far as I can tell that NS is bringing in the shared employees among subs in the future - no specific time as per the architect I spoke to few months ago. If it happens it will an amazing thing for multi country multi subsidiary companies.