Is it possible to create a custom Visualforce page for adding a new Opportunity Contact Role using standard controllers (Opportunity controller in this case)? The reason I'm asking is that I'd like to avoid writing any code for a custom controller.
The objective for the custom VF page is to make "isPrimary" field required when adding a new Opp Contact Role, which is not something that comes out of the box in Lightning Salesforce (different from classic).
Many thanks in advance