Dear Sara,
according to definition Point of Contact is an approver for a specific Functional Area. Functional Area is an attribute used to categorize users and roles.
First of all you need to assign a user to role Point of contact in Access Control Owners application.
Next you can use them in MSMP configuration as using following FM: GRAC_MSMP_POINT_CONTACT_AGENT.
Let me know, if you require further assistance,
Filip