Enterprise Structure to avoid global transfer

Summary:

Experts, Need your advise about a situation where a customer has multiple legal entities (Over the period of time they acquire many small businesses) and they have lot of people moving from one company to another company. Think of a shipping company whereas they have let's say three legal entities and employers within USA where people move from one LE to another throughout the year as each company owns the separate fleet of vessels. Each Legal entity is a PSU as well, Now we are looking to optimize the situation whereas either we can limit the global transfer or the