How to create a sub-grid that lists all lookup fields with roles from another entity

Hi All,

so we have a requirement where the custom entity has multiple lookup fields pointing to contact and we want all lookup to the contact record to be displayed in a single sub-grid but including the roles.

from contact lookup fields on the custom entity form
 

custom entity records with roles would be on the contact subgrid



Is this something that can be done out-of-the-box? am I missing anything?

Thanks,
Mark