Can we create composite primary key while exporting nodes to neo4j using Dataiku Neo4j plugin?

Suppose I have a table with below columns:

emp_id | emp_name | emp_department | date_of_joining

I want to create a composite primary key named "ID" as

ID = emp_id + "_" + date_of_joining

I prepared my data by concatenating two columns and creating ID field. Then using ID field as a primary key in export nodes recipe. Please refer to the attachment.

Is there a more straight forward way to define which columns I need to use as a composite key and providing a name for it in recipe, rather than preparing the data manually?
Does neo4j handle this itself and provide an option like it does for defining primary key?