How to create a relationship field between users and custom post "Services"

Hello,

We have been using ACF but are now using MetaBox for all of our custom posts.

The issue we have is we need to link users to their posts automatically from one field (either from the user or from the CPT (Organizations). ACF provides the relationship field with a "Target Field".

Like in ACF with a relationship field type from one place and have each object show the other object's IDs. Is this possible?

User #5 - org_associated_with: { 123,200 }

Organization #123 - org_users: { 5 }

ACF Relationship Field
https://prnt.sc/sdCnFgDQ3Nq-
https://prnt.sc/iaOk4pQtLg41

Thank you!!