Dataverse Modeling

Hi,

I am trying to create a basic data model based on the 'Opportunity' and 'Goal' entities from Dataverse. However, I am wondering what the best approach and best practices are for creating relationships in Power Bi from Dataverse. Each relational table has natural IDs that can be used for connections (e.g., 'Client' with 'Opportunity' using AccountID/OpportunityID), but the question is, should they be used, or should I create separate index keys?

I would really appreciate your help.