The most common way to set a primary contact is to add an Opportunity Contact Role and mark it Primary. Here is how a rep does it on an Opportunity in Lightning Experience.
- Open the Opportunity
Go to the Opportunity record, then find the Contact Roles related list. If you do not see it, ask an admin to add it to the page layout.
- Add a contact role
Click Add Contact Roles, search for the person, and select them. You can add several contacts in one pass to capture the full buying group.
- Choose a role and mark primary
Pick a value in the Role picklist, such as Decision Maker or Economic Buyer, then select the Primary option for the one main buyer.
- Save and confirm
Save the related list. The contact you flagged now shows Primary, and any earlier primary on that Opportunity is cleared so only one remains.
The person you are linking to the Opportunity. They must already exist as a Contact record before you can add the role.
The checkbox (IsPrimary) that designates this contact as the main one. Only one role per Opportunity can carry it.
The picklist describing what the contact does on the deal, such as Decision Maker, Influencer, or Evaluator. Admins can customize the values.
- Marking a new role as primary removes primary status from the previous contact, since only one is allowed per Opportunity.
- The primary on an Opportunity Contact Role is separate from the contact's primary account; setting one does not change the other.
- Automations and reports that read "primary contact" return blanks if no role is flagged, so set it early in the deal.