How to manage common process model

[MV]

I am using EA/7.5 with postgre repository.

Is there a way in EA for managing common processes that other model authors can refer in their business proceses? any change in common processes should be reflected whereever they have been refered to.

For example we have 2 almost similar business processes. Do I need to maintain 2 different BPMN or activity diagrams for them or i can make a common process diagram for common part and refer this common part.

Please suggest.....
Cheers / TIA